From 5d0de5240b697a98cb1971e56a68ac885ca00ba1 Mon Sep 17 00:00:00 2001
From: sigonasr2 <sigonasr2@gmail.com>
Date: Sat, 12 Sep 2020 10:57:23 -0500
Subject: [PATCH] Prepare for user registration system

---
 docker-compose.yml                            |    2 +
 frontend/.gitignore                           |    2 +
 frontend/src/App.js                           |   12 +
 frontend/src/setupProxy.js                    |   21 +
 server/app.js                                 |   77 +
 server/node_modules/nodemailer/.prettierrc.js |    8 +
 server/node_modules/nodemailer/CHANGELOG.md   |  615 +++++
 .../nodemailer/CODE_OF_CONDUCT.md             |   76 +
 .../node_modules/nodemailer/CONTRIBUTING.md   |   67 +
 server/node_modules/nodemailer/LICENSE        |   16 +
 server/node_modules/nodemailer/README.md      |   44 +
 .../nodemailer/lib/addressparser/index.js     |  313 +++
 .../nodemailer/lib/base64/index.js            |  142 ++
 .../node_modules/nodemailer/lib/dkim/index.js |  251 ++
 .../nodemailer/lib/dkim/message-parser.js     |  158 ++
 .../nodemailer/lib/dkim/relaxed-body.js       |  154 ++
 .../node_modules/nodemailer/lib/dkim/sign.js  |  117 +
 .../nodemailer/lib/fetch/cookies.js           |  284 +++
 .../nodemailer/lib/fetch/index.js             |  277 +++
 .../nodemailer/lib/json-transport/index.js    |   82 +
 .../nodemailer/lib/mail-composer/index.js     |  549 +++++
 .../nodemailer/lib/mailer/index.js            |  423 ++++
 .../nodemailer/lib/mailer/mail-message.js     |  320 +++
 .../nodemailer/lib/mime-funcs/index.js        |  628 +++++
 .../nodemailer/lib/mime-funcs/mime-types.js   | 2109 +++++++++++++++++
 .../nodemailer/lib/mime-node/index.js         | 1247 ++++++++++
 .../nodemailer/lib/mime-node/last-newline.js  |   33 +
 .../node_modules/nodemailer/lib/nodemailer.js |  148 ++
 .../node_modules/nodemailer/lib/qp/index.js   |  219 ++
 .../lib/sendmail-transport/index.js           |  208 ++
 .../lib/sendmail-transport/le-unix.js         |   43 +
 .../lib/sendmail-transport/le-windows.js      |   52 +
 .../nodemailer/lib/ses-transport/index.js     |  312 +++
 .../nodemailer/lib/shared/index.js            |  510 ++++
 .../lib/smtp-connection/data-stream.js        |  108 +
 .../lib/smtp-connection/http-proxy-client.js  |  131 +
 .../nodemailer/lib/smtp-connection/index.js   | 1757 ++++++++++++++
 .../nodemailer/lib/smtp-pool/index.js         |  641 +++++
 .../nodemailer/lib/smtp-pool/pool-resource.js |  253 ++
 .../nodemailer/lib/smtp-transport/index.js    |  408 ++++
 .../nodemailer/lib/stream-transport/index.js  |  142 ++
 .../nodemailer/lib/well-known/index.js        |   47 +
 .../nodemailer/lib/well-known/services.json   |  262 ++
 .../nodemailer/lib/xoauth2/index.js           |  368 +++
 server/node_modules/nodemailer/package.json   |   74 +
 server/node_modules/nodemailer/postinstall.js |  101 +
 server/package-lock.json                      |    5 +
 server/package.json                           |    5 +-
 48 files changed, 13817 insertions(+), 4 deletions(-)
 create mode 100644 server/node_modules/nodemailer/.prettierrc.js
 create mode 100644 server/node_modules/nodemailer/CHANGELOG.md
 create mode 100644 server/node_modules/nodemailer/CODE_OF_CONDUCT.md
 create mode 100644 server/node_modules/nodemailer/CONTRIBUTING.md
 create mode 100644 server/node_modules/nodemailer/LICENSE
 create mode 100644 server/node_modules/nodemailer/README.md
 create mode 100644 server/node_modules/nodemailer/lib/addressparser/index.js
 create mode 100644 server/node_modules/nodemailer/lib/base64/index.js
 create mode 100644 server/node_modules/nodemailer/lib/dkim/index.js
 create mode 100644 server/node_modules/nodemailer/lib/dkim/message-parser.js
 create mode 100644 server/node_modules/nodemailer/lib/dkim/relaxed-body.js
 create mode 100644 server/node_modules/nodemailer/lib/dkim/sign.js
 create mode 100644 server/node_modules/nodemailer/lib/fetch/cookies.js
 create mode 100644 server/node_modules/nodemailer/lib/fetch/index.js
 create mode 100644 server/node_modules/nodemailer/lib/json-transport/index.js
 create mode 100644 server/node_modules/nodemailer/lib/mail-composer/index.js
 create mode 100644 server/node_modules/nodemailer/lib/mailer/index.js
 create mode 100644 server/node_modules/nodemailer/lib/mailer/mail-message.js
 create mode 100644 server/node_modules/nodemailer/lib/mime-funcs/index.js
 create mode 100644 server/node_modules/nodemailer/lib/mime-funcs/mime-types.js
 create mode 100644 server/node_modules/nodemailer/lib/mime-node/index.js
 create mode 100644 server/node_modules/nodemailer/lib/mime-node/last-newline.js
 create mode 100644 server/node_modules/nodemailer/lib/nodemailer.js
 create mode 100644 server/node_modules/nodemailer/lib/qp/index.js
 create mode 100644 server/node_modules/nodemailer/lib/sendmail-transport/index.js
 create mode 100644 server/node_modules/nodemailer/lib/sendmail-transport/le-unix.js
 create mode 100644 server/node_modules/nodemailer/lib/sendmail-transport/le-windows.js
 create mode 100644 server/node_modules/nodemailer/lib/ses-transport/index.js
 create mode 100644 server/node_modules/nodemailer/lib/shared/index.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-connection/data-stream.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-connection/http-proxy-client.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-connection/index.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-pool/index.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-pool/pool-resource.js
 create mode 100644 server/node_modules/nodemailer/lib/smtp-transport/index.js
 create mode 100644 server/node_modules/nodemailer/lib/stream-transport/index.js
 create mode 100644 server/node_modules/nodemailer/lib/well-known/index.js
 create mode 100644 server/node_modules/nodemailer/lib/well-known/services.json
 create mode 100644 server/node_modules/nodemailer/lib/xoauth2/index.js
 create mode 100644 server/node_modules/nodemailer/package.json
 create mode 100644 server/node_modules/nodemailer/postinstall.js

diff --git a/docker-compose.yml b/docker-compose.yml
index 3d3e712..495af3f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -47,6 +47,8 @@ services:
       - CHOKIDAR_USEPOLLING=true
     stdin_open: true
     working_dir: /frontend
+    env_file:
+        - ./frontend/.env
     volumes:
         - /app/node_modules
         - ./frontend:/frontend
diff --git a/frontend/.gitignore b/frontend/.gitignore
index 4d29575..8b182cf 100644
--- a/frontend/.gitignore
+++ b/frontend/.gitignore
@@ -21,3 +21,5 @@
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+
+.env
diff --git a/frontend/src/App.js b/frontend/src/App.js
index 1d8b061..949dbc6 100644
--- a/frontend/src/App.js
+++ b/frontend/src/App.js
@@ -1130,6 +1130,15 @@ function SimpleUpload(p){
 	)
 }
 
+function SendMail() {
+	//process.env.REACT_APP_FRONTEND_AUTH
+	return (
+	<>
+	
+	</>
+	)
+}
+
 function Submit(p) {
 	return (
 		<div className="row">
@@ -1243,6 +1252,9 @@ function Website() {
 					<Route path="/submitplay">
 						<Submit songs={songs}/>
 					</Route>
+					<Route path="/sendmail">
+						<SendMail/>
+					</Route>
 					<Route path="/recentplays">
 						<h1 className="title">Project DivaR</h1>
 						<RecentPlays songs={songs}/>
diff --git a/frontend/src/setupProxy.js b/frontend/src/setupProxy.js
index b7bdf81..9dfd225 100644
--- a/frontend/src/setupProxy.js
+++ b/frontend/src/setupProxy.js
@@ -1,6 +1,27 @@
 const { createProxyMiddleware } = require('http-proxy-middleware');
 
 module.exports = function(app) {
+	app.use(
+	"/authenticateuser",
+	createProxyMiddleware({
+	  target: 'http://server:4501',
+	  changeOrigin: true,
+	})
+	);
+	app.use(
+	"/sendemail/register",
+	createProxyMiddleware({
+	  target: 'http://server:4501',
+	  changeOrigin: true,
+	})
+	);
+	app.use(
+	"/sendemail/login",
+	createProxyMiddleware({
+	  target: 'http://server:4501',
+	  changeOrigin: true,
+	})
+	);
 	app.use(
 	"/recentplays/:username",
 	createProxyMiddleware({
diff --git a/server/app.js b/server/app.js
index c6ec379..656eea8 100644
--- a/server/app.js
+++ b/server/app.js
@@ -12,6 +12,7 @@ app.use(
     extended: true,
   })
 )
+const nodemailer = require('nodemailer');
 const fileUpload = require('express-fileupload');
 const unzipper = require('unzipper');
 const fs = require('fs');
@@ -702,6 +703,82 @@ app.post('/song/:songname/:difficulty',(req,res)=>{
 	}
 })
 
+function CheckUserExists(username,email) {
+	return db.query("select id,username,email from users where username=$1 or email=$2 limit 1",[username,email])
+}
+
+function SendRegistrationEmail(username,emailTo,authCode) {
+	const transporter = nodemailer.createTransport({
+	  service: 'gmail',
+	  auth: {
+		user: 'admin@projectdivar.com',
+		pass: process.env.GMAIL // naturally, replace both with your real credentials or an application-specific password
+	  }
+	});
+	transporter.sendMail({
+		from: 'admin@projectdivar.com',
+		to: emailTo,
+		subject: 'Project DivaR Registration Code',
+		html: `<b>${username}</b>,<br><br>Thank you for signing up for Project DivaR!<br><br>Your authentication code is <b>${authCode}</b>!`
+	}, (err, info) => {
+		if (err) { 
+			console.log(err.message)
+		} else {
+			console.log(info.envelope);
+			console.log(info.messageId);
+		}
+	});
+}
+
+app.post('/sendemail/register',function(req,res) {
+	if (req.body&&req.body.username&&req.body.email) {
+		//Generate a token for the user to login with.
+		CheckUserExists(req.body.username,req.body.email)
+		.then((data)=>{
+			var authCode=Math.floor(Math.random()*90000)+10000
+			var authenticationToken=String(Math.floor(Math.random()*90000)+10000)+"-"+String(Math.floor(Math.random()*90000)+10000)+"-"+String(Math.floor(Math.random()*90000)+10000);
+			if (data.rows.length>0) {
+				db.query("update users set code=$1 where id=$2",[authCode,data.rows[0].id])
+			} else {
+				db.query("insert into users(username,email,authentication_token,code) values($1,$2,$3,$4)",
+				[req.body.username,req.body.email,authenticationToken,authCode])
+			}
+			return authCode
+		})
+		.then((authCode)=>{
+			res.status(200).json("Email sent.")
+			SendRegistrationEmail(req.body.username,req.body.email,authCode)
+		})
+		.catch((err)=>{
+			res.status(500).json(err.message)
+		})
+	} else {
+		res.status(400).json("Invalid credentials!")
+	}
+})
+
+function AuthenticateUser(username,auth) {
+	return db.query("select id,username,email from users where username=$1 and authentication_token=$2 limit 1",[username,auth])
+}
+
+app.post('/authenticateuser',function(req,res) {
+	if (req.body&&req.body.username&&req.body.authenticationToken) {
+		AuthenticateUser(req.body.username,req.body.authenticationToken)
+		.then((data)=>{
+			if (data.rows.length>0) {
+				res.status(200).json("Authentication Success!")
+			} else {
+				res.status(400).json("Authentication Failed!")
+			}
+		})
+		.catch((err)=>{
+			res.status(500).json(err.message)
+		})
+	} else {
+		res.status(400).json("Invalid credentials!")
+	}
+})
+
 /*
 app.get('/twitter/mentions', function(req, res) {
 	if (req.query.data) {
diff --git a/server/node_modules/nodemailer/.prettierrc.js b/server/node_modules/nodemailer/.prettierrc.js
new file mode 100644
index 0000000..3f83654
--- /dev/null
+++ b/server/node_modules/nodemailer/.prettierrc.js
@@ -0,0 +1,8 @@
+module.exports = {
+    printWidth: 160,
+    tabWidth: 4,
+    singleQuote: true,
+    endOfLine: 'lf',
+    trailingComma: 'none',
+    arrowParens: 'avoid'
+};
diff --git a/server/node_modules/nodemailer/CHANGELOG.md b/server/node_modules/nodemailer/CHANGELOG.md
new file mode 100644
index 0000000..e96c932
--- /dev/null
+++ b/server/node_modules/nodemailer/CHANGELOG.md
@@ -0,0 +1,615 @@
+# CHANGELOG
+
+## 6.4.11 2020-07-29
+
+-   Fixed escape sequence handling in address parsing
+
+## 6.4.10 2020-06-17
+
+-   Fixed RFC822 output for MailComposer when using invalid content-type value. Mostly relevant if message attachments have stragne content-type values set.
+
+## 6.4.7 2020-05-28
+
+-   Always set charset=utf-8 for Content-Type headers
+-   Catch error whn using invalid crypto.sign input
+
+## 6.4.6 2020-03-20
+
+-   fix: `requeueAttempts=n` should requeue `n` times (Patrick Malouin) [a27ed2f7]
+
+## 6.4.4 2020-03-01
+
+-   Add `options.forceAuth` for SMTP (Patrick Malouin) [a27ed2f7]
+
+## 6.4.3 2020-02-22
+
+-   Added an option to specify max number of requeues when connection closes unexpectedly (Igor Sechyn) [8a927f5a]
+
+## 6.4.2 2019-12-11
+
+-   Fixed bug where array item was used with a potentially empty array
+
+## 6.4.1 2019-12-07
+
+-   Fix processing server output with unterminated responses
+
+## 6.4.0 2019-12-04
+
+-   Do not use auth if server does not advertise AUTH support [f419b09d]
+-   add dns.CONNREFUSED (Hiroyuki Okada) [5c4c8ca8]
+
+## 6.3.1 2019-10-09
+
+-   Ignore "end" events because it might be "error" after it (dex4er) [72bade9]
+-   Set username and password on the connection proxy object correctly (UsamaAshraf) [250b1a8]
+-   Support more DNS errors (madarche) [2391aa4]
+
+## 6.3.0 2019-07-14
+
+-   Added new option to pass a set of httpHeaders to be sent when fetching attachments. See [PR #1034](https://github.com/nodemailer/nodemailer/pull/1034)
+
+## 6.2.1 2019-05-24
+
+-   No changes. It is the same as 6.2.0 that was accidentally published as 6.2.1 to npm
+
+## 6.2.0 2019-05-24
+
+-   Added new option for addressparser: `flatten`. If true then ignores group names and returns a single list of all addresses
+
+## 6.1.1 2019-04-20
+
+-   Fixed regression bug with missing smtp `authMethod` property
+
+## 6.1.0 2019-04-06
+
+-   Added new message property `amp` for providing AMP4EMAIL content
+
+## 6.0.0 2019-03-25
+
+-   SMTPConnection: use removeListener instead of removeAllListeners (xr0master) [ddc4af15]
+    Using removeListener should fix memory leak with Node.js streams
+
+## 5.1.1 2019-01-09
+
+-   Added missing option argument for custom auth
+
+## 5.1.0 2019-01-09
+
+-   Official support for custom authentication methods and examples (examples/custom-auth-async.js and examples/custom-auth-cb.js)
+
+## 5.0.1 2019-01-09
+
+-   Fixed regression error to support Node versions lower than 6.11
+-   Added expiremental custom authentication support
+
+## 5.0.0 2018-12-28
+
+-   Start using dns.resolve() instead of dns.lookup() for resolving SMTP hostnames. Might be breaking change on some environments so upgrade with care
+-   Show more logs for renewing OAuth2 tokens, previously it was not possible to see what actually failed
+
+## 4.7.0 2018-11-19
+
+-   Cleaned up List-\* header generation
+-   Fixed 'full' return option for DSN (klaronix) [23b93a3b]
+-   Support promises `for mailcomposer.build()`
+
+## 4.6.8 2018-08-15
+
+-   Use first IP address from DNS resolution when using a proxy (Limbozz) [d4ca847c]
+-   Return raw email from SES transport (gabegorelick) [3aa08967]
+
+## 4.6.7 2018-06-15
+
+-   Added option `skipEncoding` to JSONTransport
+
+## 4.6.6 2018-06-10
+
+-   Fixes mime encoded-word compatibility issue with invalid clients like Zimbra
+
+## 4.6.5 2018-05-23
+
+-   Fixed broken DKIM stream in Node.js v10
+-   Updated error messages for SMTP responses to not include a newline
+
+## 4.6.4 2018-03-31
+
+-   Readded logo author link to README that was accidentally removed a while ago
+
+## 4.6.3 2018-03-13
+
+-   Removed unneeded dependency
+
+## 4.6.2 2018-03-06
+
+-   When redirecting URL calls then do not include original POST content
+
+## 4.6.1 2018-03-06
+
+-   Fixed Smtp connection freezing, when trying to send after close / quit (twawszczak) [73d3911c]
+
+## 4.6.0 2018-02-22
+
+-   Support socks module v2 in addition to v1 [e228bcb2]
+-   Fixed invalid promise return value when using createTestAccount [5524e627]
+-   Allow using local addresses [8f6fa35f]
+
+## 4.5.0 2018-02-21
+
+-   Added new message transport option `normalizeHeaderKey(key)=>normalizedKey` for custom header formatting
+
+## 4.4.2 2018-01-20
+
+-   Added sponsors section to README
+-   enclose encodeURIComponent in try..catch to handle invalid urls
+
+## 4.4.1 2017-12-08
+
+-   Better handling of unexpectedly dropping connections
+
+## 4.4.0 2017-11-10
+
+-   Changed default behavior for attachment option contentTransferEncoding. If it is unset then base64 encoding is used for the attachment. If it is set to false then previous default applies (base64 for most, 7bit for text)
+
+## 4.3.1 2017-10-25
+
+-   Fixed a confict with Electron.js where timers do not have unref method
+
+## 4.3.0 2017-10-23
+
+-   Added new mail object method `mail.normalize(cb)` that should make creating HTTP API based transports much easier
+
+## 4.2.0 2017-10-13
+
+-   Expose streamed messages size and timers in info response
+
+## v4.1.3 2017-10-06
+
+-   Allow generating preview links without calling createTestAccount first
+
+## v4.1.2 2017-10-03
+
+-   No actual changes. Needed to push updated README to npmjs
+
+## v4.1.1 2017-09-25
+
+-   Fixed JSONTransport attachment handling
+
+## v4.1.0 2017-08-28
+
+-   Added new methods `createTestAccount` and `getTestMessageUrl` to use autogenerated email accounts from https://Ethereal.email
+
+## v4.0.1 2017-04-13
+
+-   Fixed issue with LMTP and STARTTLS
+
+## v4.0.0 2017-04-06
+
+-   License changed from EUPLv1.1 to MIT
+
+## v3.1.8 2017-03-21
+
+-   Fixed invalid List-\* header generation
+
+## v3.1.7 2017-03-14
+
+-   Emit an error if STARTTLS ends with connection being closed
+
+## v3.1.6 2017-03-14
+
+-   Expose last server response for smtpConnection
+
+## v3.1.5 2017-03-08
+
+-   Fixed SES transport, added missing `response` value
+
+## v3.1.4 2017-02-26
+
+-   Fixed DKIM calculation for empty body
+-   Ensure linebreak after message content. This fixes DKIM signatures for non-multipart messages where input did not end with a newline
+
+## v3.1.3 2017-02-17
+
+-   Fixed missing `transport.verify()` methods for SES transport
+
+## v3.1.2 2017-02-17
+
+-   Added missing error handlers for Sendmail, SES and Stream transports. If a messages contained an invalid URL as attachment then these transports threw an uncatched error
+
+## v3.1.1 2017-02-13
+
+-   Fixed missing `transport.on('idle')` and `transport.isIdle()` methods for SES transports
+
+## v3.1.0 2017-02-13
+
+-   Added built-in transport for AWS SES. [Docs](http://localhost:1313/transports/ses/)
+-   Updated stream transport to allow building JSON strings. [Docs](http://localhost:1313/transports/stream/#json-transport)
+-   Added new method _mail.resolveAll_ that fetches all attachments and such to be able to more easily build API-based transports
+
+## v3.0.2 2017-02-04
+
+-   Fixed a bug with OAuth2 login where error callback was fired twice if getToken was not available.
+
+## v3.0.1 2017-02-03
+
+-   Fixed a bug where Nodemailer threw an exception if `disableFileAccess` option was used
+-   Added FLOSS [exception declaration](FLOSS_EXCEPTIONS.md)
+
+## v3.0.0 2017-01-31
+
+-   Initial version of Nodemailer 3
+
+This update brings a lot of breaking changes:
+
+-   License changed from MIT to **EUPL-1.1**. This was possible as the new version of Nodemailer is a major rewrite. The features I don't have ownership for, were removed or reimplemented. If there's still some snippets in the code that have vague ownership then notify <mailto:andris@kreata.ee> about the conflicting code and I'll fix it.
+-   Requires **Node.js v6+**
+-   All **templating is gone**. It was too confusing to use and to be really universal a huge list of different renderers would be required. Nodemailer is about email, not about parsing different template syntaxes
+-   **No NTLM authentication**. It was too difficult to re-implement. If you still need it then it would be possible to introduce a pluggable SASL interface where you could load the NTLM module in your own code and pass it to Nodemailer. Currently this is not possible.
+-   **OAuth2 authentication** is built in and has a different [configuration](https://nodemailer.com/smtp/oauth2/). You can use both user (3LO) and service (2LO) accounts to generate access tokens from Nodemailer. Additionally there's a new feature to authenticate differently for every message – useful if your application sends on behalf of different users instead of a single sender.
+-   **Improved Calendaring**. Provide an ical file to Nodemailer to send out [calendar events](https://nodemailer.com/message/calendar-events/).
+
+And also some non-breaking changes:
+
+-   All **dependencies were dropped**. There is exactly 0 dependencies needed to use Nodemailer. This brings the installation time of Nodemailer from NPM down to less than 2 seconds
+-   **Delivery status notifications** added to Nodemailer
+-   Improved and built-in **DKIM** signing of messages. Previously you needed an external module for this and it did quite a lousy job with larger messages
+-   **Stream transport** to return a RFC822 formatted message as a stream. Useful if you want to use Nodemailer as a preprocessor and not for actual delivery.
+-   **Sendmail** transport built-in, no need for external transport plugin
+
+See [Nodemailer.com](https://nodemailer.com/) for full documentation
+
+## 2.7.0 2016-12-08
+
+-   Bumped mailcomposer that generates encoded-words differently which might break some tests
+
+## 2.6.0 2016-09-05
+
+-   Added new options disableFileAccess and disableUrlAccess
+-   Fixed envelope handling where cc/bcc fields were ignored in the envelope object
+
+## 2.4.2 2016-05-25
+
+-   Removed shrinkwrap file. Seemed to cause more trouble than help
+
+## 2.4.1 2016-05-12
+
+-   Fixed outdated shrinkwrap file
+
+## 2.4.0 2016-05-11
+
+-   Bumped mailcomposer module to allow using `false` as attachment filename (suppresses filename usage)
+-   Added NTLM authentication support
+
+## 2.3.2 2016-04-11
+
+-   Bumped smtp transport modules to get newest smtp-connection that fixes SMTPUTF8 support for internationalized email addresses
+
+## 2.3.1 2016-04-08
+
+-   Bumped mailcomposer to have better support for message/822 attachments
+
+## 2.3.0 2016-03-03
+
+-   Fixed a bug with attachment filename that contains mixed unicode and dashes
+-   Added built-in support for proxies by providing a new SMTP option `proxy` that takes a proxy configuration url as its value
+-   Added option `transport` to dynamically load transport plugins
+-   Do not require globally installed grunt-cli
+
+## 2.2.1 2016-02-20
+
+-   Fixed a bug in SMTP requireTLS option that was broken
+
+## 2.2.0 2016-02-18
+
+-   Removed the need to use `clone` dependency
+-   Added new method `verify` to check SMTP configuration
+-   Direct transport uses STARTTLS by default, fallbacks to plaintext if STARTTLS fails
+-   Added new message option `list` for setting List-\* headers
+-   Add simple proxy support with `getSocket` method
+-   Added new message option `textEncoding`. If `textEncoding` is not set then detect best encoding automatically
+-   Added new message option `icalEvent` to embed iCalendar events. Example [here](examples/ical-event.js)
+-   Added new attachment option `raw` to use prepared MIME contents instead of generating a new one. This might be useful when you want to handcraft some parts of the message yourself, for example if you want to inject a PGP encrypted message as the contents of a MIME node
+-   Added new message option `raw` to use an existing MIME message instead of generating a new one
+
+## 2.1.0 2016-02-01
+
+Republishing 2.1.0-rc.1 as stable. To recap, here's the notable changes between v2.0 and v2.1:
+
+-   Implemented templating support. You can either use a simple built-in renderer or some external advanced renderer, eg. [node-email-templates](https://github.com/niftylettuce/node-email-templates). Templating [docs](http://nodemailer.com/2-0-0-beta/templating/).
+-   Updated smtp-pool to emit 'idle' events in order to handle message queue more effectively
+-   Updated custom header handling, works everywhere the same now, no differences between adding custom headers to the message or to an attachment
+
+## 2.1.0-rc.1 2016-01-25
+
+Sneaked in some new features even though it is already rc
+
+-   If a SMTP pool is closed while there are still messages in a queue, the message callbacks are invoked with an error
+-   In case of SMTP pool the transporter emits 'idle' when there is a free connection slot available
+-   Added method `isIdle()` that checks if a pool has still some free connection slots available
+
+## 2.1.0-rc.0 2016-01-20
+
+-   Bumped dependency versions
+
+## 2.1.0-beta.3 2016-01-20
+
+-   Added support for node-email-templates templating in addition to the built-in renderer
+
+## 2.1.0-beta.2 2016-01-20
+
+-   Implemented simple templating feature
+
+## 2.1.0-beta.1 2016-01-20
+
+-   Allow using prepared header values that are not folded or encoded by Nodemailer
+
+## 2.1.0-beta.0 2016-01-20
+
+-   Use the same header custom structure for message root, attachments and alternatives
+-   Ensure that Message-Id exists when accessing message
+-   Allow using array values for custom headers (inserts every value in its own row)
+
+## 2.0.0 2016-01-11
+
+-   Released rc.2 as stable
+
+## 2.0.0-rc.2 2016-01-04
+
+-   Locked dependencies
+
+## 2.0.0-beta.2 2016-01-04
+
+-   Updated documentation to reflect changes with SMTP handling
+-   Use beta versions for smtp/pool/direct transports
+-   Updated logging
+
+## 2.0.0-beta.1 2016-01-03
+
+-   Use bunyan compatible logger instead of the emit('log') style
+-   Outsourced some reusable methods to nodemailer-shared
+-   Support setting direct/smtp/pool with the default configuration
+
+## 2.0.0-beta.0 2015-12-31
+
+-   Stream errors are not silently swallowed
+-   Do not use format=flowed
+-   Use nodemailer-fetch to fetch URL streams
+-   jshint replaced by eslint
+
+## v1.11.0 2015-12-28
+
+Allow connection url based SMTP configurations
+
+## v1.10.0 2015-11-13
+
+Added `defaults` argument for `createTransport` to predefine commonn values (eg. `from` address)
+
+## v1.9.0 2015-11-09
+
+Returns a Promise for `sendMail` if callback is not defined
+
+## v1.8.0 2015-10-08
+
+Added priority option (high, normal, low) for setting Importance header
+
+## v1.7.0 2015-10-06
+
+Replaced hyperquest with needle. Fixes issues with compressed data and redirects
+
+## v1.6.0 2015-10-05
+
+Maintenance release. Bumped dependencies to get support for unicode filenames for QQ webmail and to support emoji in filenames
+
+## v1.5.0 2015-09-24
+
+Use mailcomposer instead of built in solution to generate message sources. Bumped libmime gives better quoted-printable handling.
+
+## v1.4.0 2015-06-27
+
+Added new message option `watchHtml` to specify Apple Watch specific HTML part of the message. See [this post](https://litmus.com/blog/how-to-send-hidden-version-email-apple-watch) for details
+
+## v1.3.4 2015-04-25
+
+Maintenance release, bumped buildmail version to get fixed format=flowed handling
+
+## v1.3.3 2015-04-25
+
+Maintenance release, bumped dependencies
+
+## v1.3.2 2015-03-09
+
+Maintenance release, upgraded dependencies. Replaced simplesmtp based tests with smtp-server based ones.
+
+## v1.3.0 2014-09-12
+
+Maintenance release, upgrades buildmail and libmime. Allows using functions as transform plugins and fixes issue with unicode filenames in Gmail.
+
+## v1.2.2 2014-09-05
+
+Proper handling of data uris as attachments. Attachment `path` property can also be defined as a data uri, not just regular url or file path.
+
+## v1.2.1 2014-08-21
+
+Bumped libmime and mailbuild versions to properly handle filenames with spaces (short ascii only filenames with spaces were left unquoted).
+
+## v1.2.0 2014-08-18
+
+Allow using encoded strings as attachments. Added new property `encoding` which defines the encoding used for a `content` string. If encoding is set, the content value is converted to a Buffer value using the defined encoding before usage. Useful for including binary attachemnts in JSON formatted email objects.
+
+## v1.1.2 2014-08-18
+
+Return deprecatin error for v0.x style configuration
+
+## v1.1.1 2014-07-30
+
+Bumped nodemailer-direct-transport dependency. Updated version includes a bugfix for Stream nodes handling. Important only if use direct-transport with Streams (not file paths or urls) as attachment content.
+
+## v1.1.0 2014-07-29
+
+Added new method `resolveContent()` to get the html/text/attachment content as a String or Buffer.
+
+## v1.0.4 2014-07-23
+
+Bugfix release. HTML node was instered twice if the message consisted of a HTML content (but no text content) + at least one attachment with CID + at least one attachment without CID. In this case the HTML node was inserted both to the root level multipart/mixed section and to the multipart/related sub section
+
+## v1.0.3 2014-07-16
+
+Fixed a bug where Nodemailer crashed if the message content type was multipart/related
+
+## v1.0.2 2014-07-16
+
+Upgraded nodemailer-smtp-transport to 0.1.11\. The docs state that for SSL you should use 'secure' option but the underlying smtp-connection module used 'secureConnection' for this purpose. Fixed smpt-connection to match the docs.
+
+## v1.0.1 2014-07-15
+
+Implemented missing #close method that is passed to the underlying transport object. Required by the smtp pool.
+
+## v1.0.0 2014-07-15
+
+Total rewrite. See migration guide here: <http://www.andrisreinman.com/nodemailer-v1-0/#migrationguide>
+
+## v0.7.1 2014-07-09
+
+-   Upgraded aws-sdk to 2.0.5
+
+## v0.7.0 2014-06-17
+
+-   Bumped version to v0.7.0
+-   Fix AWS-SES usage [5b6bc144]
+-   Replace current SES with new SES using AWS-SDK (Elanorr) [c79d797a]
+-   Updated README.md about Node Email Templates (niftylettuce) [e52bef81]
+
+## v0.6.5 2014-05-15
+
+-   Bumped version to v0.6.5
+-   Use tildes instead of carets for dependency listing [5296ce41]
+-   Allow clients to set a custom identityString (venables) [5373287d]
+-   bugfix (adding "-i" to sendmail command line for each new mail) by copying this.args (vrodic) [05a8a9a3]
+-   update copyright (gdi2290) [3a6cba3a]
+
+## v0.6.4 2014-05-13
+
+-   Bumped version to v0.6.4
+-   added npmignore, bumped dependencies [21bddcd9]
+-   Add AOL to well-known services (msouce) [da7dd3b7]
+
+## v0.6.3 2014-04-16
+
+-   Bumped version to v0.6.3
+-   Upgraded simplesmtp dependency [dd367f59]
+
+## v0.6.2 2014-04-09
+
+-   Bumped version to v0.6.2
+-   Added error option to Stub transport [c423acad]
+-   Use SVG npm badge (t3chnoboy) [677117b7]
+-   add SendCloud to well known services (haio) [43c358e0]
+-   High-res build-passing and NPM module badges (sahat) [9fdc37cd]
+
+## v0.6.1 2014-01-26
+
+-   Bumped version to v0.6.1
+-   Do not throw on multiple errors from sendmail command [c6e2cd12]
+-   Do not require callback for pickup, fixes #238 [93eb3214]
+-   Added AWSSecurityToken information to README, fixes #235 [58e921d1]
+-   Added Nodemailer logo [06b7d1a8]
+
+## v0.6.0 2013-12-30
+
+-   Bumped version to v0.6.0
+-   Allow defining custom transport methods [ec5b48ce]
+-   Return messageId with responseObject for all built in transport methods [74445cec]
+-   Bumped dependency versions for mailcomposer and readable-stream [9a034c34]
+-   Changed pickup argument name to 'directory' [01c3ea53]
+-   Added support for IIS pickup directory with PICKUP transport (philipproplesch) [36940b59..360a2878]
+-   Applied common styles [9e93a409]
+-   Updated readme [c78075e7]
+
+## v0.5.15 2013-12-13
+
+-   bumped version to v0.5.15
+-   Updated README, added global options info for setting uo transports [554bb0e5]
+-   Resolve public hostname, if resolveHostname property for a transport object is set to `true` [9023a6e1..4c66b819]
+
+## v0.5.14 2013-12-05
+
+-   bumped version to v0.5.14
+-   Expose status for direct messages [f0312df6]
+-   Allow to skip the X-Mailer header if xMailer value is set to 'false' [f2c20a68]
+
+## v0.5.13 2013-12-03
+
+-   bumped version to v0.5.13
+-   Use the name property from the transport object to use for the domain part of message-id values (1598eee9)
+
+## v0.5.12 2013-12-02
+
+-   bumped version to v0.5.12
+-   Expose transport method and transport module version if available [a495106e]
+-   Added 'he' module instead of using custom html entity decoding [c197d102]
+-   Added xMailer property for transport configuration object to override X-Mailer value [e8733a61]
+-   Updated README, added description for 'mail' method [e1f5f3a6]
+
+## v0.5.11 2013-11-28
+
+-   bumped version to v0.5.11
+-   Updated mailcomposer version. Replaces ent with he [6a45b790e]
+
+## v0.5.10 2013-11-26
+
+-   bumped version to v0.5.10
+-   added shorthand function mail() for direct transport type [88129bd7]
+-   minor tweaks and typo fixes [f797409e..ceac0ca4]
+
+## v0.5.9 2013-11-25
+
+-   bumped version to v0.5.9
+-   Update for 'direct' handling [77b84e2f]
+-   do not require callback to be provided for 'direct' type [ec51c79f]
+
+## v0.5.8 2013-11-22
+
+-   bumped version to v0.5.8
+-   Added support for 'direct' transport [826f226d..0dbbcbbc]
+
+## v0.5.7 2013-11-18
+
+-   bumped version to v0.5.7
+-   Replace \r\n by \n in Sendmail transport (rolftimmermans) [fed2089e..616ec90c] A lot of sendmail implementations choke on \r\n newlines and require \n This commit addresses this by transforming all \r\n sequences passed to the sendmail command with \n
+
+## v0.5.6 2013-11-15
+
+-   bumped version to v0.5.6
+-   Upgraded mailcomposer dependency to 0.2.4 [e5ff9c40]
+-   Removed noCR option [e810d1b8]
+-   Update wellknown.js, added FastMail (k-j-kleist) [cf930f6d]
+
+## v0.5.5 2013-10-30
+
+-   bumped version to v0.5.5
+-   Updated mailcomposer dependnecy version to 0.2.3
+-   Remove legacy code - node v0.4 is not supported anymore anyway
+-   Use hostname (autodetected or from the options.name property) for Message-Id instead of "Nodemailer" (helps a bit when messages are identified as spam)
+-   Added maxMessages info to README
+
+## v0.5.4 2013-10-29
+
+-   bumped version to v0.5.4
+-   added "use strict" statements
+-   Added DSN info to README
+-   add support for QQ enterprise email (coderhaoxin)
+-   Add a Bitdeli Badge to README
+-   DSN options Passthrought into simplesmtp. (irvinzz)
+
+## v0.5.3 2013-10-03
+
+-   bumped version v0.5.3
+-   Using a stub transport to prevent sendmail from being called during a test. (jsdevel)
+-   closes #78: sendmail transport does not work correctly on Unix machines. (jsdevel)
+-   Updated PaaS Support list to include Modulus. (fiveisprime)
+-   Translate self closing break tags to newline (kosmasgiannis)
+-   fix typos (aeosynth)
+
+## v0.5.2 2013-07-25
+
+-   bumped version v0.5.2
+-   Merge pull request #177 from MrSwitch/master Fixing Amazon SES, fatal error caused by bad connection
diff --git a/server/node_modules/nodemailer/CODE_OF_CONDUCT.md b/server/node_modules/nodemailer/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..e6895ed
--- /dev/null
+++ b/server/node_modules/nodemailer/CODE_OF_CONDUCT.md
@@ -0,0 +1,76 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+ advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+ address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+ professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at info@nodemailer.com. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq
diff --git a/server/node_modules/nodemailer/CONTRIBUTING.md b/server/node_modules/nodemailer/CONTRIBUTING.md
new file mode 100644
index 0000000..d9e7b9b
--- /dev/null
+++ b/server/node_modules/nodemailer/CONTRIBUTING.md
@@ -0,0 +1,67 @@
+# Contribute
+
+## Introduction
+
+First, thank you for considering contributing to nodemailer! It's people like you that make the open source community such a great community! 😊
+
+We welcome any type of contribution, not only code. You can help with 
+- **QA**: file bug reports, the more details you can give the better (e.g. screenshots with the console open)
+- **Marketing**: writing blog posts, howto's, printing stickers, ...
+- **Community**: presenting the project at meetups, organizing a dedicated meetup for the local community, ...
+- **Code**: take a look at the [open issues](https://github.com/nodemailer/nodemailer/issues). Even if you can't write code, commenting on them, showing that you care about a given issue matters. It helps us triage them.
+- **Money**: we welcome financial contributions in full transparency on our [open collective](https://opencollective.com/nodemailer).
+
+## Your First Contribution
+
+Working on your first Pull Request? You can learn how from this *free* series, [How to Contribute to an Open Source Project on GitHub](https://egghead.io/series/how-to-contribute-to-an-open-source-project-on-github).
+
+## Submitting code
+
+Any code change should be submitted as a pull request. The description should explain what the code does and give steps to execute it. The pull request should also contain tests.
+
+## Code review process
+
+The bigger the pull request, the longer it will take to review and merge. Try to break down large pull requests in smaller chunks that are easier to review and merge.
+It is also always helpful to have some context for your pull request. What was the purpose? Why does it matter to you?
+
+## Financial contributions
+
+We also welcome financial contributions in full transparency on our [open collective](https://opencollective.com/nodemailer).
+Anyone can file an expense. If the expense makes sense for the development of the community, it will be "merged" in the ledger of our open collective by the core contributors and the person who filed the expense will be reimbursed.
+
+## Questions
+
+If you have any questions, create an [issue](https://github.com/nodemailer/nodemailer/issues) (protip: do a quick search first to see if someone else didn't ask the same question before!).
+You can also reach us at hello@nodemailer.opencollective.com.
+
+## Credits
+
+### Contributors
+
+Thank you to all the people who have already contributed to nodemailer!
+<a href="graphs/contributors"><img src="https://opencollective.com/nodemailer/contributors.svg?width=890" /></a>
+
+
+### Backers
+
+Thank you to all our backers! [[Become a backer](https://opencollective.com/nodemailer#backer)]
+
+<a href="https://opencollective.com/nodemailer#backers" target="_blank"><img src="https://opencollective.com/nodemailer/backers.svg?width=890"></a>
+
+
+### Sponsors
+
+Thank you to all our sponsors! (please ask your company to also support this open source project by [becoming a sponsor](https://opencollective.com/nodemailer#sponsor))
+
+<a href="https://opencollective.com/nodemailer/sponsor/0/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/0/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/1/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/2/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/3/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/4/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/5/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/6/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/7/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/8/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/nodemailer/sponsor/9/website" target="_blank"><img src="https://opencollective.com/nodemailer/sponsor/9/avatar.svg"></a>
+
+<!-- This `CONTRIBUTING.md` is based on @nayafia's template https://github.com/nayafia/contributing-template -->
\ No newline at end of file
diff --git a/server/node_modules/nodemailer/LICENSE b/server/node_modules/nodemailer/LICENSE
new file mode 100644
index 0000000..9dfe8b1
--- /dev/null
+++ b/server/node_modules/nodemailer/LICENSE
@@ -0,0 +1,16 @@
+Copyright (c) 2011-2019 Andris Reinman
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/server/node_modules/nodemailer/README.md b/server/node_modules/nodemailer/README.md
new file mode 100644
index 0000000..db6047f
--- /dev/null
+++ b/server/node_modules/nodemailer/README.md
@@ -0,0 +1,44 @@
+# Nodemailer
+
+[![Nodemailer](https://raw.githubusercontent.com/nodemailer/nodemailer/master/assets/nm_logo_200x136.png)](https://nodemailer.com/about/)
+
+Send e-mails from Node.js – easy as cake! 🍰✉️
+
+[![NPM](https://nodei.co/npm/nodemailer.png?downloads=true&downloadRank=true&stars=true)](https://nodemailer.com/about/)
+
+See [nodemailer.com](https://nodemailer.com/) for documentation and terms.
+
+## Having an issue?
+
+#### First review the docs
+
+Documentation for Nodemailer can be found at [nodemailer.com](https://nodemailer.com/about/).
+
+#### Nodemailer throws a SyntaxError for "..."
+
+You are using older Node.js version than v6.0. Upgrade Node.js to get support for the spread operator.
+
+#### I'm having issues with Gmail
+
+Gmail either works well or it does not work at all. It is probably easier to switch to an alternative service instead of fixing issues with Gmail. If Gmail does not work for you then don't use it. Read more about it [here](https://nodemailer.com/usage/using-gmail/).
+
+#### I get ETIMEDOUT errors
+
+Check your firewall settings. Timeout usually occurs when you try to open a connection to a port that is firewalled either on the server or on your machine.
+
+#### I get TLS errors
+
+* If you are running the code in your own machine, then check your antivirus settings. Antiviruses often mess around with email ports usage. Node.js might not recognize the MITM cert your antivirus is using.
+* Latest Node versions allow only TLS versions 1.2 and higher, some servers might still use TLS 1.1 or lower. Check Node.js docs how to get correct TLS support for your app.
+
+#### I have a different problem
+
+If you are having issues with Nodemailer, then the best way to find help would be [Stack Overflow](https://stackoverflow.com/search?q=nodemailer) or revisit the [docs](https://nodemailer.com/about/).
+
+### License
+
+Nodemailer is licensed under the **MIT license**
+
+---
+
+The Nodemailer logo was designed by [Sven Kristjansen](https://www.behance.net/kristjansen).
diff --git a/server/node_modules/nodemailer/lib/addressparser/index.js b/server/node_modules/nodemailer/lib/addressparser/index.js
new file mode 100644
index 0000000..8260ddb
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/addressparser/index.js
@@ -0,0 +1,313 @@
+'use strict';
+
+/**
+ * Converts tokens for a single address into an address object
+ *
+ * @param {Array} tokens Tokens object
+ * @return {Object} Address object
+ */
+function _handleAddress(tokens) {
+    let token;
+    let isGroup = false;
+    let state = 'text';
+    let address;
+    let addresses = [];
+    let data = {
+        address: [],
+        comment: [],
+        group: [],
+        text: []
+    };
+    let i;
+    let len;
+
+    // Filter out <addresses>, (comments) and regular text
+    for (i = 0, len = tokens.length; i < len; i++) {
+        token = tokens[i];
+        if (token.type === 'operator') {
+            switch (token.value) {
+                case '<':
+                    state = 'address';
+                    break;
+                case '(':
+                    state = 'comment';
+                    break;
+                case ':':
+                    state = 'group';
+                    isGroup = true;
+                    break;
+                default:
+                    state = 'text';
+            }
+        } else if (token.value) {
+            if (state === 'address') {
+                // handle use case where unquoted name includes a "<"
+                // Apple Mail truncates everything between an unexpected < and an address
+                // and so will we
+                token.value = token.value.replace(/^[^<]*<\s*/, '');
+            }
+            data[state].push(token.value);
+        }
+    }
+
+    // If there is no text but a comment, replace the two
+    if (!data.text.length && data.comment.length) {
+        data.text = data.comment;
+        data.comment = [];
+    }
+
+    if (isGroup) {
+        // http://tools.ietf.org/html/rfc2822#appendix-A.1.3
+        data.text = data.text.join(' ');
+        addresses.push({
+            name: data.text || (address && address.name),
+            group: data.group.length ? addressparser(data.group.join(',')) : []
+        });
+    } else {
+        // If no address was found, try to detect one from regular text
+        if (!data.address.length && data.text.length) {
+            for (i = data.text.length - 1; i >= 0; i--) {
+                if (data.text[i].match(/^[^@\s]+@[^@\s]+$/)) {
+                    data.address = data.text.splice(i, 1);
+                    break;
+                }
+            }
+
+            let _regexHandler = function (address) {
+                if (!data.address.length) {
+                    data.address = [address.trim()];
+                    return ' ';
+                } else {
+                    return address;
+                }
+            };
+
+            // still no address
+            if (!data.address.length) {
+                for (i = data.text.length - 1; i >= 0; i--) {
+                    // fixed the regex to parse email address correctly when email address has more than one @
+                    data.text[i] = data.text[i].replace(/\s*\b[^@\s]+@[^\s]+\b\s*/, _regexHandler).trim();
+                    if (data.address.length) {
+                        break;
+                    }
+                }
+            }
+        }
+
+        // If there's still is no text but a comment exixts, replace the two
+        if (!data.text.length && data.comment.length) {
+            data.text = data.comment;
+            data.comment = [];
+        }
+
+        // Keep only the first address occurence, push others to regular text
+        if (data.address.length > 1) {
+            data.text = data.text.concat(data.address.splice(1));
+        }
+
+        // Join values with spaces
+        data.text = data.text.join(' ');
+        data.address = data.address.join(' ');
+
+        if (!data.address && isGroup) {
+            return [];
+        } else {
+            address = {
+                address: data.address || data.text || '',
+                name: data.text || data.address || ''
+            };
+
+            if (address.address === address.name) {
+                if ((address.address || '').match(/@/)) {
+                    address.name = '';
+                } else {
+                    address.address = '';
+                }
+            }
+
+            addresses.push(address);
+        }
+    }
+
+    return addresses;
+}
+
+/**
+ * Creates a Tokenizer object for tokenizing address field strings
+ *
+ * @constructor
+ * @param {String} str Address field string
+ */
+class Tokenizer {
+    constructor(str) {
+        this.str = (str || '').toString();
+        this.operatorCurrent = '';
+        this.operatorExpecting = '';
+        this.node = null;
+        this.escaped = false;
+
+        this.list = [];
+        /**
+         * Operator tokens and which tokens are expected to end the sequence
+         */
+        this.operators = {
+            '"': '"',
+            '(': ')',
+            '<': '>',
+            ',': '',
+            ':': ';',
+            // Semicolons are not a legal delimiter per the RFC2822 grammar other
+            // than for terminating a group, but they are also not valid for any
+            // other use in this context.  Given that some mail clients have
+            // historically allowed the semicolon as a delimiter equivalent to the
+            // comma in their UI, it makes sense to treat them the same as a comma
+            // when used outside of a group.
+            ';': ''
+        };
+    }
+
+    /**
+     * Tokenizes the original input string
+     *
+     * @return {Array} An array of operator|text tokens
+     */
+    tokenize() {
+        let chr,
+            list = [];
+        for (let i = 0, len = this.str.length; i < len; i++) {
+            chr = this.str.charAt(i);
+            this.checkChar(chr);
+        }
+
+        this.list.forEach(node => {
+            node.value = (node.value || '').toString().trim();
+            if (node.value) {
+                list.push(node);
+            }
+        });
+
+        return list;
+    }
+
+    /**
+     * Checks if a character is an operator or text and acts accordingly
+     *
+     * @param {String} chr Character from the address field
+     */
+    checkChar(chr) {
+        if (this.escaped) {
+            // ignore next condition blocks
+        } else if (chr === this.operatorExpecting) {
+            this.node = {
+                type: 'operator',
+                value: chr
+            };
+            this.list.push(this.node);
+            this.node = null;
+            this.operatorExpecting = '';
+            this.escaped = false;
+            return;
+        } else if (!this.operatorExpecting && chr in this.operators) {
+            this.node = {
+                type: 'operator',
+                value: chr
+            };
+            this.list.push(this.node);
+            this.node = null;
+            this.operatorExpecting = this.operators[chr];
+            this.escaped = false;
+            return;
+        } else if (['"', "'"].includes(this.operatorExpecting) && chr === '\\') {
+            this.escaped = true;
+            return;
+        }
+
+        if (!this.node) {
+            this.node = {
+                type: 'text',
+                value: ''
+            };
+            this.list.push(this.node);
+        }
+
+        if (chr === '\n') {
+            // Convert newlines to spaces. Carriage return is ignored as \r and \n usually
+            // go together anyway and there already is a WS for \n. Lone \r means something is fishy.
+            chr = ' ';
+        }
+
+        if (chr.charCodeAt(0) >= 0x21 || [' ', '\t'].includes(chr)) {
+            // skip command bytes
+            this.node.value += chr;
+        }
+
+        this.escaped = false;
+    }
+}
+
+/**
+ * Parses structured e-mail addresses from an address field
+ *
+ * Example:
+ *
+ *    'Name <address@domain>'
+ *
+ * will be converted to
+ *
+ *     [{name: 'Name', address: 'address@domain'}]
+ *
+ * @param {String} str Address field
+ * @return {Array} An array of address objects
+ */
+function addressparser(str, options) {
+    options = options || {};
+
+    let tokenizer = new Tokenizer(str);
+    let tokens = tokenizer.tokenize();
+
+    let addresses = [];
+    let address = [];
+    let parsedAddresses = [];
+
+    tokens.forEach(token => {
+        if (token.type === 'operator' && (token.value === ',' || token.value === ';')) {
+            if (address.length) {
+                addresses.push(address);
+            }
+            address = [];
+        } else {
+            address.push(token);
+        }
+    });
+
+    if (address.length) {
+        addresses.push(address);
+    }
+
+    addresses.forEach(address => {
+        address = _handleAddress(address);
+        if (address.length) {
+            parsedAddresses = parsedAddresses.concat(address);
+        }
+    });
+
+    if (options.flatten) {
+        let addresses = [];
+        let walkAddressList = list => {
+            list.forEach(address => {
+                if (address.group) {
+                    return walkAddressList(address.group);
+                } else {
+                    addresses.push(address);
+                }
+            });
+        };
+        walkAddressList(parsedAddresses);
+        return addresses;
+    }
+
+    return parsedAddresses;
+}
+
+// expose to the world
+module.exports = addressparser;
diff --git a/server/node_modules/nodemailer/lib/base64/index.js b/server/node_modules/nodemailer/lib/base64/index.js
new file mode 100644
index 0000000..fbb1221
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/base64/index.js
@@ -0,0 +1,142 @@
+'use strict';
+
+const Transform = require('stream').Transform;
+
+/**
+ * Encodes a Buffer into a base64 encoded string
+ *
+ * @param {Buffer} buffer Buffer to convert
+ * @returns {String} base64 encoded string
+ */
+function encode(buffer) {
+    if (typeof buffer === 'string') {
+        buffer = Buffer.from(buffer, 'utf-8');
+    }
+
+    return buffer.toString('base64');
+}
+
+/**
+ * Adds soft line breaks to a base64 string
+ *
+ * @param {String} str base64 encoded string that might need line wrapping
+ * @param {Number} [lineLength=76] Maximum allowed length for a line
+ * @returns {String} Soft-wrapped base64 encoded string
+ */
+function wrap(str, lineLength) {
+    str = (str || '').toString();
+    lineLength = lineLength || 76;
+
+    if (str.length <= lineLength) {
+        return str;
+    }
+
+    let result = [];
+    let pos = 0;
+    let chunkLength = lineLength * 1024;
+    while (pos < str.length) {
+        let wrappedLines = str
+            .substr(pos, chunkLength)
+            .replace(new RegExp('.{' + lineLength + '}', 'g'), '$&\r\n')
+            .trim();
+        result.push(wrappedLines);
+        pos += chunkLength;
+    }
+
+    return result.join('\r\n').trim();
+}
+
+/**
+ * Creates a transform stream for encoding data to base64 encoding
+ *
+ * @constructor
+ * @param {Object} options Stream options
+ * @param {Number} [options.lineLength=76] Maximum lenght for lines, set to false to disable wrapping
+ */
+class Encoder extends Transform {
+    constructor(options) {
+        super();
+        // init Transform
+        this.options = options || {};
+
+        if (this.options.lineLength !== false) {
+            this.options.lineLength = this.options.lineLength || 76;
+        }
+
+        this._curLine = '';
+        this._remainingBytes = false;
+
+        this.inputBytes = 0;
+        this.outputBytes = 0;
+    }
+
+    _transform(chunk, encoding, done) {
+        if (encoding !== 'buffer') {
+            chunk = Buffer.from(chunk, encoding);
+        }
+
+        if (!chunk || !chunk.length) {
+            return setImmediate(done);
+        }
+
+        this.inputBytes += chunk.length;
+
+        if (this._remainingBytes && this._remainingBytes.length) {
+            chunk = Buffer.concat([this._remainingBytes, chunk], this._remainingBytes.length + chunk.length);
+            this._remainingBytes = false;
+        }
+
+        if (chunk.length % 3) {
+            this._remainingBytes = chunk.slice(chunk.length - (chunk.length % 3));
+            chunk = chunk.slice(0, chunk.length - (chunk.length % 3));
+        } else {
+            this._remainingBytes = false;
+        }
+
+        let b64 = this._curLine + encode(chunk);
+
+        if (this.options.lineLength) {
+            b64 = wrap(b64, this.options.lineLength);
+
+            // remove last line as it is still most probably incomplete
+            let lastLF = b64.lastIndexOf('\n');
+            if (lastLF < 0) {
+                this._curLine = b64;
+                b64 = '';
+            } else if (lastLF === b64.length - 1) {
+                this._curLine = '';
+            } else {
+                this._curLine = b64.substr(lastLF + 1);
+                b64 = b64.substr(0, lastLF + 1);
+            }
+        }
+
+        if (b64) {
+            this.outputBytes += b64.length;
+            this.push(Buffer.from(b64, 'ascii'));
+        }
+
+        setImmediate(done);
+    }
+
+    _flush(done) {
+        if (this._remainingBytes && this._remainingBytes.length) {
+            this._curLine += encode(this._remainingBytes);
+        }
+
+        if (this._curLine) {
+            this._curLine = wrap(this._curLine, this.options.lineLength);
+            this.outputBytes += this._curLine.length;
+            this.push(this._curLine, 'ascii');
+            this._curLine = '';
+        }
+        done();
+    }
+}
+
+// expose to the world
+module.exports = {
+    encode,
+    wrap,
+    Encoder
+};
diff --git a/server/node_modules/nodemailer/lib/dkim/index.js b/server/node_modules/nodemailer/lib/dkim/index.js
new file mode 100644
index 0000000..7b242be
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/dkim/index.js
@@ -0,0 +1,251 @@
+'use strict';
+
+// FIXME:
+// replace this Transform mess with a method that pipes input argument to output argument
+
+const MessageParser = require('./message-parser');
+const RelaxedBody = require('./relaxed-body');
+const sign = require('./sign');
+const PassThrough = require('stream').PassThrough;
+const fs = require('fs');
+const path = require('path');
+const crypto = require('crypto');
+
+const DKIM_ALGO = 'sha256';
+const MAX_MESSAGE_SIZE = 128 * 1024; // buffer messages larger than this to disk
+
+/*
+// Usage:
+
+let dkim = new DKIM({
+    domainName: 'example.com',
+    keySelector: 'key-selector',
+    privateKey,
+    cacheDir: '/tmp'
+});
+dkim.sign(input).pipe(process.stdout);
+
+// Where inputStream is a rfc822 message (either a stream, string or Buffer)
+// and outputStream is a DKIM signed rfc822 message
+*/
+
+class DKIMSigner {
+    constructor(options, keys, input, output) {
+        this.options = options || {};
+        this.keys = keys;
+
+        this.cacheTreshold = Number(this.options.cacheTreshold) || MAX_MESSAGE_SIZE;
+        this.hashAlgo = this.options.hashAlgo || DKIM_ALGO;
+
+        this.cacheDir = this.options.cacheDir || false;
+
+        this.chunks = [];
+        this.chunklen = 0;
+        this.readPos = 0;
+        this.cachePath = this.cacheDir ? path.join(this.cacheDir, 'message.' + Date.now() + '-' + crypto.randomBytes(14).toString('hex')) : false;
+        this.cache = false;
+
+        this.headers = false;
+        this.bodyHash = false;
+        this.parser = false;
+        this.relaxedBody = false;
+
+        this.input = input;
+        this.output = output;
+        this.output.usingCache = false;
+
+        this.errored = false;
+
+        this.input.on('error', err => {
+            this.errored = true;
+            this.cleanup();
+            output.emit('error', err);
+        });
+    }
+
+    cleanup() {
+        if (!this.cache || !this.cachePath) {
+            return;
+        }
+        fs.unlink(this.cachePath, () => false);
+    }
+
+    createReadCache() {
+        // pipe remainings to cache file
+        this.cache = fs.createReadStream(this.cachePath);
+        this.cache.once('error', err => {
+            this.cleanup();
+            this.output.emit('error', err);
+        });
+        this.cache.once('close', () => {
+            this.cleanup();
+        });
+        this.cache.pipe(this.output);
+    }
+
+    sendNextChunk() {
+        if (this.errored) {
+            return;
+        }
+
+        if (this.readPos >= this.chunks.length) {
+            if (!this.cache) {
+                return this.output.end();
+            }
+            return this.createReadCache();
+        }
+        let chunk = this.chunks[this.readPos++];
+        if (this.output.write(chunk) === false) {
+            return this.output.once('drain', () => {
+                this.sendNextChunk();
+            });
+        }
+        setImmediate(() => this.sendNextChunk());
+    }
+
+    sendSignedOutput() {
+        let keyPos = 0;
+        let signNextKey = () => {
+            if (keyPos >= this.keys.length) {
+                this.output.write(this.parser.rawHeaders);
+                return setImmediate(() => this.sendNextChunk());
+            }
+            let key = this.keys[keyPos++];
+            let dkimField = sign(this.headers, this.hashAlgo, this.bodyHash, {
+                domainName: key.domainName,
+                keySelector: key.keySelector,
+                privateKey: key.privateKey,
+                headerFieldNames: this.options.headerFieldNames,
+                skipFields: this.options.skipFields
+            });
+            if (dkimField) {
+                this.output.write(Buffer.from(dkimField + '\r\n'));
+            }
+            return setImmediate(signNextKey);
+        };
+
+        if (this.bodyHash && this.headers) {
+            return signNextKey();
+        }
+
+        this.output.write(this.parser.rawHeaders);
+        this.sendNextChunk();
+    }
+
+    createWriteCache() {
+        this.output.usingCache = true;
+        // pipe remainings to cache file
+        this.cache = fs.createWriteStream(this.cachePath);
+        this.cache.once('error', err => {
+            this.cleanup();
+            // drain input
+            this.relaxedBody.unpipe(this.cache);
+            this.relaxedBody.on('readable', () => {
+                while (this.relaxedBody.read() !== null) {
+                    // do nothing
+                }
+            });
+            this.errored = true;
+            // emit error
+            this.output.emit('error', err);
+        });
+        this.cache.once('close', () => {
+            this.sendSignedOutput();
+        });
+        this.relaxedBody.removeAllListeners('readable');
+        this.relaxedBody.pipe(this.cache);
+    }
+
+    signStream() {
+        this.parser = new MessageParser();
+        this.relaxedBody = new RelaxedBody({
+            hashAlgo: this.hashAlgo
+        });
+
+        this.parser.on('headers', value => {
+            this.headers = value;
+        });
+
+        this.relaxedBody.on('hash', value => {
+            this.bodyHash = value;
+        });
+
+        this.relaxedBody.on('readable', () => {
+            let chunk;
+            if (this.cache) {
+                return;
+            }
+            while ((chunk = this.relaxedBody.read()) !== null) {
+                this.chunks.push(chunk);
+                this.chunklen += chunk.length;
+                if (this.chunklen >= this.cacheTreshold && this.cachePath) {
+                    return this.createWriteCache();
+                }
+            }
+        });
+
+        this.relaxedBody.on('end', () => {
+            if (this.cache) {
+                return;
+            }
+            this.sendSignedOutput();
+        });
+
+        this.parser.pipe(this.relaxedBody);
+        setImmediate(() => this.input.pipe(this.parser));
+    }
+}
+
+class DKIM {
+    constructor(options) {
+        this.options = options || {};
+        this.keys = [].concat(
+            this.options.keys || {
+                domainName: options.domainName,
+                keySelector: options.keySelector,
+                privateKey: options.privateKey
+            }
+        );
+    }
+
+    sign(input, extraOptions) {
+        let output = new PassThrough();
+        let inputStream = input;
+        let writeValue = false;
+
+        if (Buffer.isBuffer(input)) {
+            writeValue = input;
+            inputStream = new PassThrough();
+        } else if (typeof input === 'string') {
+            writeValue = Buffer.from(input);
+            inputStream = new PassThrough();
+        }
+
+        let options = this.options;
+        if (extraOptions && Object.keys(extraOptions).length) {
+            options = {};
+            Object.keys(this.options || {}).forEach(key => {
+                options[key] = this.options[key];
+            });
+            Object.keys(extraOptions || {}).forEach(key => {
+                if (!(key in options)) {
+                    options[key] = extraOptions[key];
+                }
+            });
+        }
+
+        let signer = new DKIMSigner(options, this.keys, inputStream, output);
+        setImmediate(() => {
+            signer.signStream();
+            if (writeValue) {
+                setImmediate(() => {
+                    inputStream.end(writeValue);
+                });
+            }
+        });
+
+        return output;
+    }
+}
+
+module.exports = DKIM;
diff --git a/server/node_modules/nodemailer/lib/dkim/message-parser.js b/server/node_modules/nodemailer/lib/dkim/message-parser.js
new file mode 100644
index 0000000..124002e
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/dkim/message-parser.js
@@ -0,0 +1,158 @@
+'use strict';
+
+const Transform = require('stream').Transform;
+
+/**
+ * MessageParser instance is a transform stream that separates message headers
+ * from the rest of the body. Headers are emitted with the 'headers' event. Message
+ * body is passed on as the resulting stream.
+ */
+class MessageParser extends Transform {
+    constructor(options) {
+        super(options);
+        this.lastBytes = Buffer.alloc(4);
+        this.headersParsed = false;
+        this.headerBytes = 0;
+        this.headerChunks = [];
+        this.rawHeaders = false;
+        this.bodySize = 0;
+    }
+
+    /**
+     * Keeps count of the last 4 bytes in order to detect line breaks on chunk boundaries
+     *
+     * @param {Buffer} data Next data chunk from the stream
+     */
+    updateLastBytes(data) {
+        let lblen = this.lastBytes.length;
+        let nblen = Math.min(data.length, lblen);
+
+        // shift existing bytes
+        for (let i = 0, len = lblen - nblen; i < len; i++) {
+            this.lastBytes[i] = this.lastBytes[i + nblen];
+        }
+
+        // add new bytes
+        for (let i = 1; i <= nblen; i++) {
+            this.lastBytes[lblen - i] = data[data.length - i];
+        }
+    }
+
+    /**
+     * Finds and removes message headers from the remaining body. We want to keep
+     * headers separated until final delivery to be able to modify these
+     *
+     * @param {Buffer} data Next chunk of data
+     * @return {Boolean} Returns true if headers are already found or false otherwise
+     */
+    checkHeaders(data) {
+        if (this.headersParsed) {
+            return true;
+        }
+
+        let lblen = this.lastBytes.length;
+        let headerPos = 0;
+        this.curLinePos = 0;
+        for (let i = 0, len = this.lastBytes.length + data.length; i < len; i++) {
+            let chr;
+            if (i < lblen) {
+                chr = this.lastBytes[i];
+            } else {
+                chr = data[i - lblen];
+            }
+            if (chr === 0x0a && i) {
+                let pr1 = i - 1 < lblen ? this.lastBytes[i - 1] : data[i - 1 - lblen];
+                let pr2 = i > 1 ? (i - 2 < lblen ? this.lastBytes[i - 2] : data[i - 2 - lblen]) : false;
+                if (pr1 === 0x0a) {
+                    this.headersParsed = true;
+                    headerPos = i - lblen + 1;
+                    this.headerBytes += headerPos;
+                    break;
+                } else if (pr1 === 0x0d && pr2 === 0x0a) {
+                    this.headersParsed = true;
+                    headerPos = i - lblen + 1;
+                    this.headerBytes += headerPos;
+                    break;
+                }
+            }
+        }
+
+        if (this.headersParsed) {
+            this.headerChunks.push(data.slice(0, headerPos));
+            this.rawHeaders = Buffer.concat(this.headerChunks, this.headerBytes);
+            this.headerChunks = null;
+            this.emit('headers', this.parseHeaders());
+            if (data.length - 1 > headerPos) {
+                let chunk = data.slice(headerPos);
+                this.bodySize += chunk.length;
+                // this would be the first chunk of data sent downstream
+                setImmediate(() => this.push(chunk));
+            }
+            return false;
+        } else {
+            this.headerBytes += data.length;
+            this.headerChunks.push(data);
+        }
+
+        // store last 4 bytes to catch header break
+        this.updateLastBytes(data);
+
+        return false;
+    }
+
+    _transform(chunk, encoding, callback) {
+        if (!chunk || !chunk.length) {
+            return callback();
+        }
+
+        if (typeof chunk === 'string') {
+            chunk = Buffer.from(chunk, encoding);
+        }
+
+        let headersFound;
+
+        try {
+            headersFound = this.checkHeaders(chunk);
+        } catch (E) {
+            return callback(E);
+        }
+
+        if (headersFound) {
+            this.bodySize += chunk.length;
+            this.push(chunk);
+        }
+
+        setImmediate(callback);
+    }
+
+    _flush(callback) {
+        if (this.headerChunks) {
+            let chunk = Buffer.concat(this.headerChunks, this.headerBytes);
+            this.bodySize += chunk.length;
+            this.push(chunk);
+            this.headerChunks = null;
+        }
+        callback();
+    }
+
+    parseHeaders() {
+        let lines = (this.rawHeaders || '').toString().split(/\r?\n/);
+        for (let i = lines.length - 1; i > 0; i--) {
+            if (/^\s/.test(lines[i])) {
+                lines[i - 1] += '\n' + lines[i];
+                lines.splice(i, 1);
+            }
+        }
+        return lines
+            .filter(line => line.trim())
+            .map(line => ({
+                key: line
+                    .substr(0, line.indexOf(':'))
+                    .trim()
+                    .toLowerCase(),
+                line
+            }));
+    }
+}
+
+module.exports = MessageParser;
diff --git a/server/node_modules/nodemailer/lib/dkim/relaxed-body.js b/server/node_modules/nodemailer/lib/dkim/relaxed-body.js
new file mode 100644
index 0000000..03558e8
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/dkim/relaxed-body.js
@@ -0,0 +1,154 @@
+'use strict';
+
+// streams through a message body and calculates relaxed body hash
+
+const Transform = require('stream').Transform;
+const crypto = require('crypto');
+
+class RelaxedBody extends Transform {
+    constructor(options) {
+        super();
+        options = options || {};
+        this.chunkBuffer = [];
+        this.chunkBufferLen = 0;
+        this.bodyHash = crypto.createHash(options.hashAlgo || 'sha1');
+        this.remainder = '';
+        this.byteLength = 0;
+
+        this.debug = options.debug;
+        this._debugBody = options.debug ? [] : false;
+    }
+
+    updateHash(chunk) {
+        let bodyStr;
+
+        // find next remainder
+        let nextRemainder = '';
+
+        // This crux finds and removes the spaces from the last line and the newline characters after the last non-empty line
+        // If we get another chunk that does not match this description then we can restore the previously processed data
+        let state = 'file';
+        for (let i = chunk.length - 1; i >= 0; i--) {
+            let c = chunk[i];
+
+            if (state === 'file' && (c === 0x0a || c === 0x0d)) {
+                // do nothing, found \n or \r at the end of chunk, stil end of file
+            } else if (state === 'file' && (c === 0x09 || c === 0x20)) {
+                // switch to line ending mode, this is the last non-empty line
+                state = 'line';
+            } else if (state === 'line' && (c === 0x09 || c === 0x20)) {
+                // do nothing, found ' ' or \t at the end of line, keep processing the last non-empty line
+            } else if (state === 'file' || state === 'line') {
+                // non line/file ending character found, switch to body mode
+                state = 'body';
+                if (i === chunk.length - 1) {
+                    // final char is not part of line end or file end, so do nothing
+                    break;
+                }
+            }
+
+            if (i === 0) {
+                // reached to the beginning of the chunk, check if it is still about the ending
+                // and if the remainder also matches
+                if (
+                    (state === 'file' && (!this.remainder || /[\r\n]$/.test(this.remainder))) ||
+                    (state === 'line' && (!this.remainder || /[ \t]$/.test(this.remainder)))
+                ) {
+                    // keep everything
+                    this.remainder += chunk.toString('binary');
+                    return;
+                } else if (state === 'line' || state === 'file') {
+                    // process existing remainder as normal line but store the current chunk
+                    nextRemainder = chunk.toString('binary');
+                    chunk = false;
+                    break;
+                }
+            }
+
+            if (state !== 'body') {
+                continue;
+            }
+
+            // reached first non ending byte
+            nextRemainder = chunk.slice(i + 1).toString('binary');
+            chunk = chunk.slice(0, i + 1);
+            break;
+        }
+
+        let needsFixing = !!this.remainder;
+        if (chunk && !needsFixing) {
+            // check if we even need to change anything
+            for (let i = 0, len = chunk.length; i < len; i++) {
+                if (i && chunk[i] === 0x0a && chunk[i - 1] !== 0x0d) {
+                    // missing \r before \n
+                    needsFixing = true;
+                    break;
+                } else if (i && chunk[i] === 0x0d && chunk[i - 1] === 0x20) {
+                    // trailing WSP found
+                    needsFixing = true;
+                    break;
+                } else if (i && chunk[i] === 0x20 && chunk[i - 1] === 0x20) {
+                    // multiple spaces found, needs to be replaced with just one
+                    needsFixing = true;
+                    break;
+                } else if (chunk[i] === 0x09) {
+                    // TAB found, needs to be replaced with a space
+                    needsFixing = true;
+                    break;
+                }
+            }
+        }
+
+        if (needsFixing) {
+            bodyStr = this.remainder + (chunk ? chunk.toString('binary') : '');
+            this.remainder = nextRemainder;
+            bodyStr = bodyStr
+                .replace(/\r?\n/g, '\n') // use js line endings
+                .replace(/[ \t]*$/gm, '') // remove line endings, rtrim
+                .replace(/[ \t]+/gm, ' ') // single spaces
+                .replace(/\n/g, '\r\n'); // restore rfc822 line endings
+            chunk = Buffer.from(bodyStr, 'binary');
+        } else if (nextRemainder) {
+            this.remainder = nextRemainder;
+        }
+
+        if (this.debug) {
+            this._debugBody.push(chunk);
+        }
+        this.bodyHash.update(chunk);
+    }
+
+    _transform(chunk, encoding, callback) {
+        if (!chunk || !chunk.length) {
+            return callback();
+        }
+
+        if (typeof chunk === 'string') {
+            chunk = Buffer.from(chunk, encoding);
+        }
+
+        this.updateHash(chunk);
+
+        this.byteLength += chunk.length;
+        this.push(chunk);
+        callback();
+    }
+
+    _flush(callback) {
+        // generate final hash and emit it
+        if (/[\r\n]$/.test(this.remainder) && this.byteLength > 2) {
+            // add terminating line end
+            this.bodyHash.update(Buffer.from('\r\n'));
+        }
+        if (!this.byteLength) {
+            // emit empty line buffer to keep the stream flowing
+            this.push(Buffer.from('\r\n'));
+            // this.bodyHash.update(Buffer.from('\r\n'));
+        }
+
+        this.emit('hash', this.bodyHash.digest('base64'), this.debug ? Buffer.concat(this._debugBody) : false);
+        callback();
+    }
+}
+
+module.exports = RelaxedBody;
diff --git a/server/node_modules/nodemailer/lib/dkim/sign.js b/server/node_modules/nodemailer/lib/dkim/sign.js
new file mode 100644
index 0000000..b243dc3
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/dkim/sign.js
@@ -0,0 +1,117 @@
+'use strict';
+
+const punycode = require('punycode');
+const mimeFuncs = require('../mime-funcs');
+const crypto = require('crypto');
+
+/**
+ * Returns DKIM signature header line
+ *
+ * @param {Object} headers Parsed headers object from MessageParser
+ * @param {String} bodyHash Base64 encoded hash of the message
+ * @param {Object} options DKIM options
+ * @param {String} options.domainName Domain name to be signed for
+ * @param {String} options.keySelector DKIM key selector to use
+ * @param {String} options.privateKey DKIM private key to use
+ * @return {String} Complete header line
+ */
+
+module.exports = (headers, hashAlgo, bodyHash, options) => {
+    options = options || {};
+
+    // all listed fields from RFC4871 #5.5
+    let defaultFieldNames =
+        'From:Sender:Reply-To:Subject:Date:Message-ID:To:' +
+        'Cc:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-ID:' +
+        'Content-Description:Resent-Date:Resent-From:Resent-Sender:' +
+        'Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:' +
+        'List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:' +
+        'List-Owner:List-Archive';
+
+    let fieldNames = options.headerFieldNames || defaultFieldNames;
+
+    let canonicalizedHeaderData = relaxedHeaders(headers, fieldNames, options.skipFields);
+    let dkimHeader = generateDKIMHeader(options.domainName, options.keySelector, canonicalizedHeaderData.fieldNames, hashAlgo, bodyHash);
+
+    let signer, signature;
+
+    canonicalizedHeaderData.headers += 'dkim-signature:' + relaxedHeaderLine(dkimHeader);
+
+    signer = crypto.createSign(('rsa-' + hashAlgo).toUpperCase());
+    signer.update(canonicalizedHeaderData.headers);
+    try {
+        signature = signer.sign(options.privateKey, 'base64');
+    } catch (E) {
+        return false;
+    }
+
+    return dkimHeader + signature.replace(/(^.{73}|.{75}(?!\r?\n|\r))/g, '$&\r\n ').trim();
+};
+
+module.exports.relaxedHeaders = relaxedHeaders;
+
+function generateDKIMHeader(domainName, keySelector, fieldNames, hashAlgo, bodyHash) {
+    let dkim = [
+        'v=1',
+        'a=rsa-' + hashAlgo,
+        'c=relaxed/relaxed',
+        'd=' + punycode.toASCII(domainName),
+        'q=dns/txt',
+        's=' + keySelector,
+        'bh=' + bodyHash,
+        'h=' + fieldNames
+    ].join('; ');
+
+    return mimeFuncs.foldLines('DKIM-Signature: ' + dkim, 76) + ';\r\n b=';
+}
+
+function relaxedHeaders(headers, fieldNames, skipFields) {
+    let includedFields = new Set();
+    let skip = new Set();
+    let headerFields = new Map();
+
+    (skipFields || '')
+        .toLowerCase()
+        .split(':')
+        .forEach(field => {
+            skip.add(field.trim());
+        });
+
+    (fieldNames || '')
+        .toLowerCase()
+        .split(':')
+        .filter(field => !skip.has(field.trim()))
+        .forEach(field => {
+            includedFields.add(field.trim());
+        });
+
+    for (let i = headers.length - 1; i >= 0; i--) {
+        let line = headers[i];
+        // only include the first value from bottom to top
+        if (includedFields.has(line.key) && !headerFields.has(line.key)) {
+            headerFields.set(line.key, relaxedHeaderLine(line.line));
+        }
+    }
+
+    let headersList = [];
+    let fields = [];
+    includedFields.forEach(field => {
+        if (headerFields.has(field)) {
+            fields.push(field);
+            headersList.push(field + ':' + headerFields.get(field));
+        }
+    });
+
+    return {
+        headers: headersList.join('\r\n') + '\r\n',
+        fieldNames: fields.join(':')
+    };
+}
+
+function relaxedHeaderLine(line) {
+    return line
+        .substr(line.indexOf(':') + 1)
+        .replace(/\r?\n/g, '')
+        .replace(/\s+/g, ' ')
+        .trim();
+}
diff --git a/server/node_modules/nodemailer/lib/fetch/cookies.js b/server/node_modules/nodemailer/lib/fetch/cookies.js
new file mode 100644
index 0000000..3fbd988
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/fetch/cookies.js
@@ -0,0 +1,284 @@
+'use strict';
+
+// module to handle cookies
+
+const urllib = require('url');
+
+const SESSION_TIMEOUT = 1800; // 30 min
+
+/**
+ * Creates a biskviit cookie jar for managing cookie values in memory
+ *
+ * @constructor
+ * @param {Object} [options] Optional options object
+ */
+class Cookies {
+    constructor(options) {
+        this.options = options || {};
+        this.cookies = [];
+    }
+
+    /**
+     * Stores a cookie string to the cookie storage
+     *
+     * @param {String} cookieStr Value from the 'Set-Cookie:' header
+     * @param {String} url Current URL
+     */
+    set(cookieStr, url) {
+        let urlparts = urllib.parse(url || '');
+        let cookie = this.parse(cookieStr);
+        let domain;
+
+        if (cookie.domain) {
+            domain = cookie.domain.replace(/^\./, '');
+
+            // do not allow cross origin cookies
+            if (
+                // can't be valid if the requested domain is shorter than current hostname
+                urlparts.hostname.length < domain.length ||
+                // prefix domains with dot to be sure that partial matches are not used
+                ('.' + urlparts.hostname).substr(-domain.length + 1) !== '.' + domain
+            ) {
+                cookie.domain = urlparts.hostname;
+            }
+        } else {
+            cookie.domain = urlparts.hostname;
+        }
+
+        if (!cookie.path) {
+            cookie.path = this.getPath(urlparts.pathname);
+        }
+
+        // if no expire date, then use sessionTimeout value
+        if (!cookie.expires) {
+            cookie.expires = new Date(Date.now() + (Number(this.options.sessionTimeout || SESSION_TIMEOUT) || SESSION_TIMEOUT) * 1000);
+        }
+
+        return this.add(cookie);
+    }
+
+    /**
+     * Returns cookie string for the 'Cookie:' header.
+     *
+     * @param {String} url URL to check for
+     * @returns {String} Cookie header or empty string if no matches were found
+     */
+    get(url) {
+        return this.list(url)
+            .map(cookie => cookie.name + '=' + cookie.value)
+            .join('; ');
+    }
+
+    /**
+     * Lists all valied cookie objects for the specified URL
+     *
+     * @param {String} url URL to check for
+     * @returns {Array} An array of cookie objects
+     */
+    list(url) {
+        let result = [];
+        let i;
+        let cookie;
+
+        for (i = this.cookies.length - 1; i >= 0; i--) {
+            cookie = this.cookies[i];
+
+            if (this.isExpired(cookie)) {
+                this.cookies.splice(i, i);
+                continue;
+            }
+
+            if (this.match(cookie, url)) {
+                result.unshift(cookie);
+            }
+        }
+
+        return result;
+    }
+
+    /**
+     * Parses cookie string from the 'Set-Cookie:' header
+     *
+     * @param {String} cookieStr String from the 'Set-Cookie:' header
+     * @returns {Object} Cookie object
+     */
+    parse(cookieStr) {
+        let cookie = {};
+
+        (cookieStr || '')
+            .toString()
+            .split(';')
+            .forEach(cookiePart => {
+                let valueParts = cookiePart.split('=');
+                let key = valueParts
+                    .shift()
+                    .trim()
+                    .toLowerCase();
+                let value = valueParts.join('=').trim();
+                let domain;
+
+                if (!key) {
+                    // skip empty parts
+                    return;
+                }
+
+                switch (key) {
+                    case 'expires':
+                        value = new Date(value);
+                        // ignore date if can not parse it
+                        if (value.toString() !== 'Invalid Date') {
+                            cookie.expires = value;
+                        }
+                        break;
+
+                    case 'path':
+                        cookie.path = value;
+                        break;
+
+                    case 'domain':
+                        domain = value.toLowerCase();
+                        if (domain.length && domain.charAt(0) !== '.') {
+                            domain = '.' + domain; // ensure preceeding dot for user set domains
+                        }
+                        cookie.domain = domain;
+                        break;
+
+                    case 'max-age':
+                        cookie.expires = new Date(Date.now() + (Number(value) || 0) * 1000);
+                        break;
+
+                    case 'secure':
+                        cookie.secure = true;
+                        break;
+
+                    case 'httponly':
+                        cookie.httponly = true;
+                        break;
+
+                    default:
+                        if (!cookie.name) {
+                            cookie.name = key;
+                            cookie.value = value;
+                        }
+                }
+            });
+
+        return cookie;
+    }
+
+    /**
+     * Checks if a cookie object is valid for a specified URL
+     *
+     * @param {Object} cookie Cookie object
+     * @param {String} url URL to check for
+     * @returns {Boolean} true if cookie is valid for specifiec URL
+     */
+    match(cookie, url) {
+        let urlparts = urllib.parse(url || '');
+
+        // check if hostname matches
+        // .foo.com also matches subdomains, foo.com does not
+        if (
+            urlparts.hostname !== cookie.domain &&
+            (cookie.domain.charAt(0) !== '.' || ('.' + urlparts.hostname).substr(-cookie.domain.length) !== cookie.domain)
+        ) {
+            return false;
+        }
+
+        // check if path matches
+        let path = this.getPath(urlparts.pathname);
+        if (path.substr(0, cookie.path.length) !== cookie.path) {
+            return false;
+        }
+
+        // check secure argument
+        if (cookie.secure && urlparts.protocol !== 'https:') {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Adds (or updates/removes if needed) a cookie object to the cookie storage
+     *
+     * @param {Object} cookie Cookie value to be stored
+     */
+    add(cookie) {
+        let i;
+        let len;
+
+        // nothing to do here
+        if (!cookie || !cookie.name) {
+            return false;
+        }
+
+        // overwrite if has same params
+        for (i = 0, len = this.cookies.length; i < len; i++) {
+            if (this.compare(this.cookies[i], cookie)) {
+                // check if the cookie needs to be removed instead
+                if (this.isExpired(cookie)) {
+                    this.cookies.splice(i, 1); // remove expired/unset cookie
+                    return false;
+                }
+
+                this.cookies[i] = cookie;
+                return true;
+            }
+        }
+
+        // add as new if not already expired
+        if (!this.isExpired(cookie)) {
+            this.cookies.push(cookie);
+        }
+
+        return true;
+    }
+
+    /**
+     * Checks if two cookie objects are the same
+     *
+     * @param {Object} a Cookie to check against
+     * @param {Object} b Cookie to check against
+     * @returns {Boolean} True, if the cookies are the same
+     */
+    compare(a, b) {
+        return a.name === b.name && a.path === b.path && a.domain === b.domain && a.secure === b.secure && a.httponly === a.httponly;
+    }
+
+    /**
+     * Checks if a cookie is expired
+     *
+     * @param {Object} cookie Cookie object to check against
+     * @returns {Boolean} True, if the cookie is expired
+     */
+    isExpired(cookie) {
+        return (cookie.expires && cookie.expires < new Date()) || !cookie.value;
+    }
+
+    /**
+     * Returns normalized cookie path for an URL path argument
+     *
+     * @param {String} pathname
+     * @returns {String} Normalized path
+     */
+    getPath(pathname) {
+        let path = (pathname || '/').split('/');
+        path.pop(); // remove filename part
+        path = path.join('/').trim();
+
+        // ensure path prefix /
+        if (path.charAt(0) !== '/') {
+            path = '/' + path;
+        }
+
+        // ensure path suffix /
+        if (path.substr(-1) !== '/') {
+            path += '/';
+        }
+
+        return path;
+    }
+}
+
+module.exports = Cookies;
diff --git a/server/node_modules/nodemailer/lib/fetch/index.js b/server/node_modules/nodemailer/lib/fetch/index.js
new file mode 100644
index 0000000..ca7874e
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/fetch/index.js
@@ -0,0 +1,277 @@
+'use strict';
+
+const http = require('http');
+const https = require('https');
+const urllib = require('url');
+const zlib = require('zlib');
+const PassThrough = require('stream').PassThrough;
+const Cookies = require('./cookies');
+const packageData = require('../../package.json');
+
+const MAX_REDIRECTS = 5;
+
+module.exports = function(url, options) {
+    return fetch(url, options);
+};
+
+module.exports.Cookies = Cookies;
+
+function fetch(url, options) {
+    options = options || {};
+
+    options.fetchRes = options.fetchRes || new PassThrough();
+    options.cookies = options.cookies || new Cookies();
+    options.redirects = options.redirects || 0;
+    options.maxRedirects = isNaN(options.maxRedirects) ? MAX_REDIRECTS : options.maxRedirects;
+
+    if (options.cookie) {
+        [].concat(options.cookie || []).forEach(cookie => {
+            options.cookies.set(cookie, url);
+        });
+        options.cookie = false;
+    }
+
+    let fetchRes = options.fetchRes;
+    let parsed = urllib.parse(url);
+    let method =
+        (options.method || '')
+            .toString()
+            .trim()
+            .toUpperCase() || 'GET';
+    let finished = false;
+    let cookies;
+    let body;
+
+    let handler = parsed.protocol === 'https:' ? https : http;
+
+    let headers = {
+        'accept-encoding': 'gzip,deflate',
+        'user-agent': 'nodemailer/' + packageData.version
+    };
+
+    Object.keys(options.headers || {}).forEach(key => {
+        headers[key.toLowerCase().trim()] = options.headers[key];
+    });
+
+    if (options.userAgent) {
+        headers['user-agent'] = options.userAgent;
+    }
+
+    if (parsed.auth) {
+        headers.Authorization = 'Basic ' + Buffer.from(parsed.auth).toString('base64');
+    }
+
+    if ((cookies = options.cookies.get(url))) {
+        headers.cookie = cookies;
+    }
+
+    if (options.body) {
+        if (options.contentType !== false) {
+            headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
+        }
+
+        if (typeof options.body.pipe === 'function') {
+            // it's a stream
+            headers['Transfer-Encoding'] = 'chunked';
+            body = options.body;
+            body.on('error', err => {
+                if (finished) {
+                    return;
+                }
+                finished = true;
+                err.type = 'FETCH';
+                err.sourceUrl = url;
+                fetchRes.emit('error', err);
+            });
+        } else {
+            if (options.body instanceof Buffer) {
+                body = options.body;
+            } else if (typeof options.body === 'object') {
+                try {
+                    // encodeURIComponent can fail on invalid input (partial emoji etc.)
+                    body = Buffer.from(
+                        Object.keys(options.body)
+                            .map(key => {
+                                let value = options.body[key].toString().trim();
+                                return encodeURIComponent(key) + '=' + encodeURIComponent(value);
+                            })
+                            .join('&')
+                    );
+                } catch (E) {
+                    if (finished) {
+                        return;
+                    }
+                    finished = true;
+                    E.type = 'FETCH';
+                    E.sourceUrl = url;
+                    fetchRes.emit('error', E);
+                    return;
+                }
+            } else {
+                body = Buffer.from(options.body.toString().trim());
+            }
+
+            headers['Content-Type'] = options.contentType || 'application/x-www-form-urlencoded';
+            headers['Content-Length'] = body.length;
+        }
+        // if method is not provided, use POST instead of GET
+        method =
+            (options.method || '')
+                .toString()
+                .trim()
+                .toUpperCase() || 'POST';
+    }
+
+    let req;
+    let reqOptions = {
+        method,
+        host: parsed.hostname,
+        path: parsed.path,
+        port: parsed.port ? parsed.port : parsed.protocol === 'https:' ? 443 : 80,
+        headers,
+        rejectUnauthorized: false,
+        agent: false
+    };
+
+    if (options.tls) {
+        Object.keys(options.tls).forEach(key => {
+            reqOptions[key] = options.tls[key];
+        });
+    }
+
+    try {
+        req = handler.request(reqOptions);
+    } catch (E) {
+        finished = true;
+        setImmediate(() => {
+            E.type = 'FETCH';
+            E.sourceUrl = url;
+            fetchRes.emit('error', E);
+        });
+        return fetchRes;
+    }
+
+    if (options.timeout) {
+        req.setTimeout(options.timeout, () => {
+            if (finished) {
+                return;
+            }
+            finished = true;
+            req.abort();
+            let err = new Error('Request Timeout');
+            err.type = 'FETCH';
+            err.sourceUrl = url;
+            fetchRes.emit('error', err);
+        });
+    }
+
+    req.on('error', err => {
+        if (finished) {
+            return;
+        }
+        finished = true;
+        err.type = 'FETCH';
+        err.sourceUrl = url;
+        fetchRes.emit('error', err);
+    });
+
+    req.on('response', res => {
+        let inflate;
+
+        if (finished) {
+            return;
+        }
+
+        switch (res.headers['content-encoding']) {
+            case 'gzip':
+            case 'deflate':
+                inflate = zlib.createUnzip();
+                break;
+        }
+
+        if (res.headers['set-cookie']) {
+            [].concat(res.headers['set-cookie'] || []).forEach(cookie => {
+                options.cookies.set(cookie, url);
+            });
+        }
+
+        if ([301, 302, 303, 307, 308].includes(res.statusCode) && res.headers.location) {
+            // redirect
+            options.redirects++;
+            if (options.redirects > options.maxRedirects) {
+                finished = true;
+                let err = new Error('Maximum redirect count exceeded');
+                err.type = 'FETCH';
+                err.sourceUrl = url;
+                fetchRes.emit('error', err);
+                req.abort();
+                return;
+            }
+            // redirect does not include POST body
+            options.method = 'GET';
+            options.body = false;
+            return fetch(urllib.resolve(url, res.headers.location), options);
+        }
+
+        fetchRes.statusCode = res.statusCode;
+        fetchRes.headers = res.headers;
+
+        if (res.statusCode >= 300 && !options.allowErrorResponse) {
+            finished = true;
+            let err = new Error('Invalid status code ' + res.statusCode);
+            err.type = 'FETCH';
+            err.sourceUrl = url;
+            fetchRes.emit('error', err);
+            req.abort();
+            return;
+        }
+
+        res.on('error', err => {
+            if (finished) {
+                return;
+            }
+            finished = true;
+            err.type = 'FETCH';
+            err.sourceUrl = url;
+            fetchRes.emit('error', err);
+            req.abort();
+        });
+
+        if (inflate) {
+            res.pipe(inflate).pipe(fetchRes);
+            inflate.on('error', err => {
+                if (finished) {
+                    return;
+                }
+                finished = true;
+                err.type = 'FETCH';
+                err.sourceUrl = url;
+                fetchRes.emit('error', err);
+                req.abort();
+            });
+        } else {
+            res.pipe(fetchRes);
+        }
+    });
+
+    setImmediate(() => {
+        if (body) {
+            try {
+                if (typeof body.pipe === 'function') {
+                    return body.pipe(req);
+                } else {
+                    req.write(body);
+                }
+            } catch (err) {
+                finished = true;
+                err.type = 'FETCH';
+                err.sourceUrl = url;
+                fetchRes.emit('error', err);
+                return;
+            }
+        }
+        req.end();
+    });
+
+    return fetchRes;
+}
diff --git a/server/node_modules/nodemailer/lib/json-transport/index.js b/server/node_modules/nodemailer/lib/json-transport/index.js
new file mode 100644
index 0000000..769bde6
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/json-transport/index.js
@@ -0,0 +1,82 @@
+'use strict';
+
+const packageData = require('../../package.json');
+const shared = require('../shared');
+
+/**
+ * Generates a Transport object to generate JSON output
+ *
+ * @constructor
+ * @param {Object} optional config parameter
+ */
+class JSONTransport {
+    constructor(options) {
+        options = options || {};
+
+        this.options = options || {};
+
+        this.name = 'JSONTransport';
+        this.version = packageData.version;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'json-transport'
+        });
+    }
+
+    /**
+     * <p>Compiles a mailcomposer message and forwards it to handler that sends it.</p>
+     *
+     * @param {Object} emailMessage MailComposer object
+     * @param {Function} callback Callback function to run when the sending is completed
+     */
+    send(mail, done) {
+        // Sendmail strips this header line by itself
+        mail.message.keepBcc = true;
+
+        let envelope = mail.data.envelope || mail.message.getEnvelope();
+        let messageId = mail.message.messageId();
+
+        let recipients = [].concat(envelope.to || []);
+        if (recipients.length > 3) {
+            recipients.push('...and ' + recipients.splice(2).length + ' more');
+        }
+        this.logger.info(
+            {
+                tnx: 'send',
+                messageId
+            },
+            'Composing JSON structure of %s to <%s>',
+            messageId,
+            recipients.join(', ')
+        );
+
+        setImmediate(() => {
+            mail.normalize((err, data) => {
+                if (err) {
+                    this.logger.error(
+                        {
+                            err,
+                            tnx: 'send',
+                            messageId
+                        },
+                        'Failed building JSON structure for %s. %s',
+                        messageId,
+                        err.message
+                    );
+                    return done(err);
+                }
+
+                delete data.envelope;
+                delete data.normalizedHeaders;
+
+                return done(null, {
+                    envelope,
+                    messageId,
+                    message: this.options.skipEncoding ? data : JSON.stringify(data)
+                });
+            });
+        });
+    }
+}
+
+module.exports = JSONTransport;
diff --git a/server/node_modules/nodemailer/lib/mail-composer/index.js b/server/node_modules/nodemailer/lib/mail-composer/index.js
new file mode 100644
index 0000000..0bbf75c
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mail-composer/index.js
@@ -0,0 +1,549 @@
+/* eslint no-undefined: 0 */
+
+'use strict';
+
+const MimeNode = require('../mime-node');
+const mimeFuncs = require('../mime-funcs');
+
+/**
+ * Creates the object for composing a MimeNode instance out from the mail options
+ *
+ * @constructor
+ * @param {Object} mail Mail options
+ */
+class MailComposer {
+    constructor(mail) {
+        this.mail = mail || {};
+        this.message = false;
+    }
+
+    /**
+     * Builds MimeNode instance
+     */
+    compile() {
+        this._alternatives = this.getAlternatives();
+        this._htmlNode = this._alternatives.filter(alternative => /^text\/html\b/i.test(alternative.contentType)).pop();
+        this._attachments = this.getAttachments(!!this._htmlNode);
+
+        this._useRelated = !!(this._htmlNode && this._attachments.related.length);
+        this._useAlternative = this._alternatives.length > 1;
+        this._useMixed = this._attachments.attached.length > 1 || (this._alternatives.length && this._attachments.attached.length === 1);
+
+        // Compose MIME tree
+        if (this.mail.raw) {
+            this.message = new MimeNode().setRaw(this.mail.raw);
+        } else if (this._useMixed) {
+            this.message = this._createMixed();
+        } else if (this._useAlternative) {
+            this.message = this._createAlternative();
+        } else if (this._useRelated) {
+            this.message = this._createRelated();
+        } else {
+            this.message = this._createContentNode(
+                false,
+                []
+                    .concat(this._alternatives || [])
+                    .concat(this._attachments.attached || [])
+                    .shift() || {
+                    contentType: 'text/plain',
+                    content: ''
+                }
+            );
+        }
+
+        // Add custom headers
+        if (this.mail.headers) {
+            this.message.addHeader(this.mail.headers);
+        }
+
+        // Add headers to the root node, always overrides custom headers
+        ['from', 'sender', 'to', 'cc', 'bcc', 'reply-to', 'in-reply-to', 'references', 'subject', 'message-id', 'date'].forEach(header => {
+            let key = header.replace(/-(\w)/g, (o, c) => c.toUpperCase());
+            if (this.mail[key]) {
+                this.message.setHeader(header, this.mail[key]);
+            }
+        });
+
+        // Sets custom envelope
+        if (this.mail.envelope) {
+            this.message.setEnvelope(this.mail.envelope);
+        }
+
+        // ensure Message-Id value
+        this.message.messageId();
+
+        return this.message;
+    }
+
+    /**
+     * List all attachments. Resulting attachment objects can be used as input for MimeNode nodes
+     *
+     * @param {Boolean} findRelated If true separate related attachments from attached ones
+     * @returns {Object} An object of arrays (`related` and `attached`)
+     */
+    getAttachments(findRelated) {
+        let icalEvent, eventObject;
+        let attachments = [].concat(this.mail.attachments || []).map((attachment, i) => {
+            let data;
+            let isMessageNode = /^message\//i.test(attachment.contentType);
+
+            if (/^data:/i.test(attachment.path || attachment.href)) {
+                attachment = this._processDataUrl(attachment);
+            }
+
+            data = {
+                contentType: attachment.contentType || mimeFuncs.detectMimeType(attachment.filename || attachment.path || attachment.href || 'bin'),
+                contentDisposition: attachment.contentDisposition || (isMessageNode ? 'inline' : 'attachment'),
+                contentTransferEncoding: 'contentTransferEncoding' in attachment ? attachment.contentTransferEncoding : 'base64'
+            };
+
+            if (attachment.filename) {
+                data.filename = attachment.filename;
+            } else if (!isMessageNode && attachment.filename !== false) {
+                data.filename = (attachment.path || attachment.href || '').split('/').pop().split('?').shift() || 'attachment-' + (i + 1);
+                if (data.filename.indexOf('.') < 0) {
+                    data.filename += '.' + mimeFuncs.detectExtension(data.contentType);
+                }
+            }
+
+            if (/^https?:\/\//i.test(attachment.path)) {
+                attachment.href = attachment.path;
+                attachment.path = undefined;
+            }
+
+            if (attachment.cid) {
+                data.cid = attachment.cid;
+            }
+
+            if (attachment.raw) {
+                data.raw = attachment.raw;
+            } else if (attachment.path) {
+                data.content = {
+                    path: attachment.path
+                };
+            } else if (attachment.href) {
+                data.content = {
+                    href: attachment.href,
+                    httpHeaders: attachment.httpHeaders
+                };
+            } else {
+                data.content = attachment.content || '';
+            }
+
+            if (attachment.encoding) {
+                data.encoding = attachment.encoding;
+            }
+
+            if (attachment.headers) {
+                data.headers = attachment.headers;
+            }
+
+            return data;
+        });
+
+        if (this.mail.icalEvent) {
+            if (
+                typeof this.mail.icalEvent === 'object' &&
+                (this.mail.icalEvent.content || this.mail.icalEvent.path || this.mail.icalEvent.href || this.mail.icalEvent.raw)
+            ) {
+                icalEvent = this.mail.icalEvent;
+            } else {
+                icalEvent = {
+                    content: this.mail.icalEvent
+                };
+            }
+
+            eventObject = {};
+            Object.keys(icalEvent).forEach(key => {
+                eventObject[key] = icalEvent[key];
+            });
+
+            eventObject.contentType = 'application/ics';
+            if (!eventObject.headers) {
+                eventObject.headers = {};
+            }
+            eventObject.filename = eventObject.filename || 'invite.ics';
+            eventObject.headers['Content-Disposition'] = 'attachment';
+            eventObject.headers['Content-Transfer-Encoding'] = 'base64';
+        }
+
+        if (!findRelated) {
+            return {
+                attached: attachments.concat(eventObject || []),
+                related: []
+            };
+        } else {
+            return {
+                attached: attachments.filter(attachment => !attachment.cid).concat(eventObject || []),
+                related: attachments.filter(attachment => !!attachment.cid)
+            };
+        }
+    }
+
+    /**
+     * List alternatives. Resulting objects can be used as input for MimeNode nodes
+     *
+     * @returns {Array} An array of alternative elements. Includes the `text` and `html` values as well
+     */
+    getAlternatives() {
+        let alternatives = [],
+            text,
+            html,
+            watchHtml,
+            amp,
+            icalEvent,
+            eventObject;
+
+        if (this.mail.text) {
+            if (typeof this.mail.text === 'object' && (this.mail.text.content || this.mail.text.path || this.mail.text.href || this.mail.text.raw)) {
+                text = this.mail.text;
+            } else {
+                text = {
+                    content: this.mail.text
+                };
+            }
+            text.contentType = 'text/plain; charset=utf-8';
+        }
+
+        if (this.mail.watchHtml) {
+            if (
+                typeof this.mail.watchHtml === 'object' &&
+                (this.mail.watchHtml.content || this.mail.watchHtml.path || this.mail.watchHtml.href || this.mail.watchHtml.raw)
+            ) {
+                watchHtml = this.mail.watchHtml;
+            } else {
+                watchHtml = {
+                    content: this.mail.watchHtml
+                };
+            }
+            watchHtml.contentType = 'text/watch-html; charset=utf-8';
+        }
+
+        if (this.mail.amp) {
+            if (typeof this.mail.amp === 'object' && (this.mail.amp.content || this.mail.amp.path || this.mail.amp.href || this.mail.amp.raw)) {
+                amp = this.mail.amp;
+            } else {
+                amp = {
+                    content: this.mail.amp
+                };
+            }
+            amp.contentType = 'text/x-amp-html; charset=utf-8';
+        }
+
+        // only include the calendar alternative if there are no attachments
+        // otherwise you might end up in a blank screen on some clients
+        if (this.mail.icalEvent && !(this.mail.attachments && this.mail.attachments.length)) {
+            if (
+                typeof this.mail.icalEvent === 'object' &&
+                (this.mail.icalEvent.content || this.mail.icalEvent.path || this.mail.icalEvent.href || this.mail.icalEvent.raw)
+            ) {
+                icalEvent = this.mail.icalEvent;
+            } else {
+                icalEvent = {
+                    content: this.mail.icalEvent
+                };
+            }
+
+            eventObject = {};
+            Object.keys(icalEvent).forEach(key => {
+                eventObject[key] = icalEvent[key];
+            });
+
+            if (eventObject.content && typeof eventObject.content === 'object') {
+                // we are going to have the same attachment twice, so mark this to be
+                // resolved just once
+                eventObject.content._resolve = true;
+            }
+
+            eventObject.filename = false;
+            eventObject.contentType = 'text/calendar; charset=utf-8; method=' + (eventObject.method || 'PUBLISH').toString().trim().toUpperCase();
+            if (!eventObject.headers) {
+                eventObject.headers = {};
+            }
+        }
+
+        if (this.mail.html) {
+            if (typeof this.mail.html === 'object' && (this.mail.html.content || this.mail.html.path || this.mail.html.href || this.mail.html.raw)) {
+                html = this.mail.html;
+            } else {
+                html = {
+                    content: this.mail.html
+                };
+            }
+            html.contentType = 'text/html; charset=utf-8';
+        }
+
+        []
+            .concat(text || [])
+            .concat(watchHtml || [])
+            .concat(amp || [])
+            .concat(html || [])
+            .concat(eventObject || [])
+            .concat(this.mail.alternatives || [])
+            .forEach(alternative => {
+                let data;
+
+                if (/^data:/i.test(alternative.path || alternative.href)) {
+                    alternative = this._processDataUrl(alternative);
+                }
+
+                data = {
+                    contentType: alternative.contentType || mimeFuncs.detectMimeType(alternative.filename || alternative.path || alternative.href || 'txt'),
+                    contentTransferEncoding: alternative.contentTransferEncoding
+                };
+
+                if (alternative.filename) {
+                    data.filename = alternative.filename;
+                }
+
+                if (/^https?:\/\//i.test(alternative.path)) {
+                    alternative.href = alternative.path;
+                    alternative.path = undefined;
+                }
+
+                if (alternative.raw) {
+                    data.raw = alternative.raw;
+                } else if (alternative.path) {
+                    data.content = {
+                        path: alternative.path
+                    };
+                } else if (alternative.href) {
+                    data.content = {
+                        href: alternative.href
+                    };
+                } else {
+                    data.content = alternative.content || '';
+                }
+
+                if (alternative.encoding) {
+                    data.encoding = alternative.encoding;
+                }
+
+                if (alternative.headers) {
+                    data.headers = alternative.headers;
+                }
+
+                alternatives.push(data);
+            });
+
+        return alternatives;
+    }
+
+    /**
+     * Builds multipart/mixed node. It should always contain different type of elements on the same level
+     * eg. text + attachments
+     *
+     * @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
+     * @returns {Object} MimeNode node element
+     */
+    _createMixed(parentNode) {
+        let node;
+
+        if (!parentNode) {
+            node = new MimeNode('multipart/mixed', {
+                baseBoundary: this.mail.baseBoundary,
+                textEncoding: this.mail.textEncoding,
+                boundaryPrefix: this.mail.boundaryPrefix,
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        } else {
+            node = parentNode.createChild('multipart/mixed', {
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        }
+
+        if (this._useAlternative) {
+            this._createAlternative(node);
+        } else if (this._useRelated) {
+            this._createRelated(node);
+        }
+
+        []
+            .concat((!this._useAlternative && this._alternatives) || [])
+            .concat(this._attachments.attached || [])
+            .forEach(element => {
+                // if the element is a html node from related subpart then ignore it
+                if (!this._useRelated || element !== this._htmlNode) {
+                    this._createContentNode(node, element);
+                }
+            });
+
+        return node;
+    }
+
+    /**
+     * Builds multipart/alternative node. It should always contain same type of elements on the same level
+     * eg. text + html view of the same data
+     *
+     * @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
+     * @returns {Object} MimeNode node element
+     */
+    _createAlternative(parentNode) {
+        let node;
+
+        if (!parentNode) {
+            node = new MimeNode('multipart/alternative', {
+                baseBoundary: this.mail.baseBoundary,
+                textEncoding: this.mail.textEncoding,
+                boundaryPrefix: this.mail.boundaryPrefix,
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        } else {
+            node = parentNode.createChild('multipart/alternative', {
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        }
+
+        this._alternatives.forEach(alternative => {
+            if (this._useRelated && this._htmlNode === alternative) {
+                this._createRelated(node);
+            } else {
+                this._createContentNode(node, alternative);
+            }
+        });
+
+        return node;
+    }
+
+    /**
+     * Builds multipart/related node. It should always contain html node with related attachments
+     *
+     * @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
+     * @returns {Object} MimeNode node element
+     */
+    _createRelated(parentNode) {
+        let node;
+
+        if (!parentNode) {
+            node = new MimeNode('multipart/related; type="text/html"', {
+                baseBoundary: this.mail.baseBoundary,
+                textEncoding: this.mail.textEncoding,
+                boundaryPrefix: this.mail.boundaryPrefix,
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        } else {
+            node = parentNode.createChild('multipart/related; type="text/html"', {
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        }
+
+        this._createContentNode(node, this._htmlNode);
+
+        this._attachments.related.forEach(alternative => this._createContentNode(node, alternative));
+
+        return node;
+    }
+
+    /**
+     * Creates a regular node with contents
+     *
+     * @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
+     * @param {Object} element Node data
+     * @returns {Object} MimeNode node element
+     */
+    _createContentNode(parentNode, element) {
+        element = element || {};
+        element.content = element.content || '';
+
+        let node;
+        let encoding = (element.encoding || 'utf8')
+            .toString()
+            .toLowerCase()
+            .replace(/[-_\s]/g, '');
+
+        if (!parentNode) {
+            node = new MimeNode(element.contentType, {
+                filename: element.filename,
+                baseBoundary: this.mail.baseBoundary,
+                textEncoding: this.mail.textEncoding,
+                boundaryPrefix: this.mail.boundaryPrefix,
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess
+            });
+        } else {
+            node = parentNode.createChild(element.contentType, {
+                filename: element.filename,
+                disableUrlAccess: this.mail.disableUrlAccess,
+                disableFileAccess: this.mail.disableFileAccess,
+                normalizeHeaderKey: this.mail.normalizeHeaderKey
+            });
+        }
+
+        // add custom headers
+        if (element.headers) {
+            node.addHeader(element.headers);
+        }
+
+        if (element.cid) {
+            node.setHeader('Content-Id', '<' + element.cid.replace(/[<>]/g, '') + '>');
+        }
+
+        if (element.contentTransferEncoding) {
+            node.setHeader('Content-Transfer-Encoding', element.contentTransferEncoding);
+        } else if (this.mail.encoding && /^text\//i.test(element.contentType)) {
+            node.setHeader('Content-Transfer-Encoding', this.mail.encoding);
+        }
+
+        if (!/^text\//i.test(element.contentType) || element.contentDisposition) {
+            node.setHeader('Content-Disposition', element.contentDisposition || (element.cid ? 'inline' : 'attachment'));
+        }
+
+        if (typeof element.content === 'string' && !['utf8', 'usascii', 'ascii'].includes(encoding)) {
+            element.content = Buffer.from(element.content, encoding);
+        }
+
+        // prefer pregenerated raw content
+        if (element.raw) {
+            node.setRaw(element.raw);
+        } else {
+            node.setContent(element.content);
+        }
+
+        return node;
+    }
+
+    /**
+     * Parses data uri and converts it to a Buffer
+     *
+     * @param {Object} element Content element
+     * @return {Object} Parsed element
+     */
+    _processDataUrl(element) {
+        let parts = (element.path || element.href).match(/^data:((?:[^;]*;)*(?:[^,]*)),(.*)$/i);
+        if (!parts) {
+            return element;
+        }
+
+        element.content = /\bbase64$/i.test(parts[1]) ? Buffer.from(parts[2], 'base64') : Buffer.from(decodeURIComponent(parts[2]));
+
+        if ('path' in element) {
+            element.path = false;
+        }
+
+        if ('href' in element) {
+            element.href = false;
+        }
+
+        parts[1].split(';').forEach(item => {
+            if (/^\w+\/[^/]+$/i.test(item)) {
+                element.contentType = element.contentType || item.toLowerCase();
+            }
+        });
+
+        return element;
+    }
+}
+
+module.exports = MailComposer;
diff --git a/server/node_modules/nodemailer/lib/mailer/index.js b/server/node_modules/nodemailer/lib/mailer/index.js
new file mode 100644
index 0000000..7fe3f42
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mailer/index.js
@@ -0,0 +1,423 @@
+'use strict';
+
+const EventEmitter = require('events');
+const shared = require('../shared');
+const mimeTypes = require('../mime-funcs/mime-types');
+const MailComposer = require('../mail-composer');
+const DKIM = require('../dkim');
+const httpProxyClient = require('../smtp-connection/http-proxy-client');
+const util = require('util');
+const urllib = require('url');
+const packageData = require('../../package.json');
+const MailMessage = require('./mail-message');
+const net = require('net');
+const dns = require('dns');
+const crypto = require('crypto');
+
+/**
+ * Creates an object for exposing the Mail API
+ *
+ * @constructor
+ * @param {Object} transporter Transport object instance to pass the mails to
+ */
+class Mail extends EventEmitter {
+    constructor(transporter, options, defaults) {
+        super();
+
+        this.options = options || {};
+        this._defaults = defaults || {};
+
+        this._defaultPlugins = {
+            compile: [(...args) => this._convertDataImages(...args)],
+            stream: []
+        };
+
+        this._userPlugins = {
+            compile: [],
+            stream: []
+        };
+
+        this.meta = new Map();
+
+        this.dkim = this.options.dkim ? new DKIM(this.options.dkim) : false;
+
+        this.transporter = transporter;
+        this.transporter.mailer = this;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'mail'
+        });
+
+        this.logger.debug(
+            {
+                tnx: 'create'
+            },
+            'Creating transport: %s',
+            this.getVersionString()
+        );
+
+        // setup emit handlers for the transporter
+        if (typeof this.transporter.on === 'function') {
+            // deprecated log interface
+            this.transporter.on('log', log => {
+                this.logger.debug(
+                    {
+                        tnx: 'transport'
+                    },
+                    '%s: %s',
+                    log.type,
+                    log.message
+                );
+            });
+
+            // transporter errors
+            this.transporter.on('error', err => {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'transport'
+                    },
+                    'Transport Error: %s',
+                    err.message
+                );
+                this.emit('error', err);
+            });
+
+            // indicates if the sender has became idle
+            this.transporter.on('idle', (...args) => {
+                this.emit('idle', ...args);
+            });
+        }
+
+        /**
+         * Optional methods passed to the underlying transport object
+         */
+        ['close', 'isIdle', 'verify'].forEach(method => {
+            this[method] = (...args) => {
+                if (typeof this.transporter[method] === 'function') {
+                    return this.transporter[method](...args);
+                } else {
+                    this.logger.warn(
+                        {
+                            tnx: 'transport',
+                            methodName: method
+                        },
+                        'Non existing method %s called for transport',
+                        method
+                    );
+                    return false;
+                }
+            };
+        });
+
+        // setup proxy handling
+        if (this.options.proxy && typeof this.options.proxy === 'string') {
+            this.setupProxy(this.options.proxy);
+        }
+    }
+
+    use(step, plugin) {
+        step = (step || '').toString();
+        if (!this._userPlugins.hasOwnProperty(step)) {
+            this._userPlugins[step] = [plugin];
+        } else {
+            this._userPlugins[step].push(plugin);
+        }
+
+        return this;
+    }
+
+    /**
+     * Sends an email using the preselected transport object
+     *
+     * @param {Object} data E-data description
+     * @param {Function?} callback Callback to run once the sending succeeded or failed
+     */
+    sendMail(data, callback) {
+        let promise;
+
+        if (!callback) {
+            promise = new Promise((resolve, reject) => {
+                callback = shared.callbackPromise(resolve, reject);
+            });
+        }
+
+        if (typeof this.getSocket === 'function') {
+            this.transporter.getSocket = this.getSocket;
+            this.getSocket = false;
+        }
+
+        let mail = new MailMessage(this, data);
+
+        this.logger.debug(
+            {
+                tnx: 'transport',
+                name: this.transporter.name,
+                version: this.transporter.version,
+                action: 'send'
+            },
+            'Sending mail using %s/%s',
+            this.transporter.name,
+            this.transporter.version
+        );
+
+        this._processPlugins('compile', mail, err => {
+            if (err) {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'plugin',
+                        action: 'compile'
+                    },
+                    'PluginCompile Error: %s',
+                    err.message
+                );
+                return callback(err);
+            }
+
+            mail.message = new MailComposer(mail.data).compile();
+
+            mail.setMailerHeader();
+            mail.setPriorityHeaders();
+            mail.setListHeaders();
+
+            this._processPlugins('stream', mail, err => {
+                if (err) {
+                    this.logger.error(
+                        {
+                            err,
+                            tnx: 'plugin',
+                            action: 'stream'
+                        },
+                        'PluginStream Error: %s',
+                        err.message
+                    );
+                    return callback(err);
+                }
+
+                if (mail.data.dkim || this.dkim) {
+                    mail.message.processFunc(input => {
+                        let dkim = mail.data.dkim ? new DKIM(mail.data.dkim) : this.dkim;
+                        this.logger.debug(
+                            {
+                                tnx: 'DKIM',
+                                messageId: mail.message.messageId(),
+                                dkimDomains: dkim.keys.map(key => key.keySelector + '.' + key.domainName).join(', ')
+                            },
+                            'Signing outgoing message with %s keys',
+                            dkim.keys.length
+                        );
+                        return dkim.sign(input, mail.data._dkim);
+                    });
+                }
+
+                this.transporter.send(mail, (...args) => {
+                    if (args[0]) {
+                        this.logger.error(
+                            {
+                                err: args[0],
+                                tnx: 'transport',
+                                action: 'send'
+                            },
+                            'Send Error: %s',
+                            args[0].message
+                        );
+                    }
+                    callback(...args);
+                });
+            });
+        });
+
+        return promise;
+    }
+
+    getVersionString() {
+        return util.format('%s (%s; +%s; %s/%s)', packageData.name, packageData.version, packageData.homepage, this.transporter.name, this.transporter.version);
+    }
+
+    _processPlugins(step, mail, callback) {
+        step = (step || '').toString();
+
+        if (!this._userPlugins.hasOwnProperty(step)) {
+            return callback();
+        }
+
+        let userPlugins = this._userPlugins[step] || [];
+        let defaultPlugins = this._defaultPlugins[step] || [];
+
+        if (userPlugins.length) {
+            this.logger.debug(
+                {
+                    tnx: 'transaction',
+                    pluginCount: userPlugins.length,
+                    step
+                },
+                'Using %s plugins for %s',
+                userPlugins.length,
+                step
+            );
+        }
+
+        if (userPlugins.length + defaultPlugins.length === 0) {
+            return callback();
+        }
+
+        let pos = 0;
+        let block = 'default';
+        let processPlugins = () => {
+            let curplugins = block === 'default' ? defaultPlugins : userPlugins;
+            if (pos >= curplugins.length) {
+                if (block === 'default' && userPlugins.length) {
+                    block = 'user';
+                    pos = 0;
+                    curplugins = userPlugins;
+                } else {
+                    return callback();
+                }
+            }
+            let plugin = curplugins[pos++];
+            plugin(mail, err => {
+                if (err) {
+                    return callback(err);
+                }
+                processPlugins();
+            });
+        };
+
+        processPlugins();
+    }
+
+    /**
+     * Sets up proxy handler for a Nodemailer object
+     *
+     * @param {String} proxyUrl Proxy configuration url
+     */
+    setupProxy(proxyUrl) {
+        let proxy = urllib.parse(proxyUrl);
+
+        // setup socket handler for the mailer object
+        this.getSocket = (options, callback) => {
+            let protocol = proxy.protocol.replace(/:$/, '').toLowerCase();
+
+            if (this.meta.has('proxy_handler_' + protocol)) {
+                return this.meta.get('proxy_handler_' + protocol)(proxy, options, callback);
+            }
+
+            switch (protocol) {
+                // Connect using a HTTP CONNECT method
+                case 'http':
+                case 'https':
+                    httpProxyClient(proxy.href, options.port, options.host, (err, socket) => {
+                        if (err) {
+                            return callback(err);
+                        }
+                        return callback(null, {
+                            connection: socket
+                        });
+                    });
+                    return;
+                case 'socks':
+                case 'socks5':
+                case 'socks4':
+                case 'socks4a': {
+                    if (!this.meta.has('proxy_socks_module')) {
+                        return callback(new Error('Socks module not loaded'));
+                    }
+                    let connect = ipaddress => {
+                        let proxyV2 = !!this.meta.get('proxy_socks_module').SocksClient;
+                        let socksClient = proxyV2 ? this.meta.get('proxy_socks_module').SocksClient : this.meta.get('proxy_socks_module');
+                        let proxyType = Number(proxy.protocol.replace(/\D/g, '')) || 5;
+                        let connectionOpts = {
+                            proxy: {
+                                ipaddress,
+                                port: Number(proxy.port),
+                                type: proxyType
+                            },
+                            [proxyV2 ? 'destination' : 'target']: {
+                                host: options.host,
+                                port: options.port
+                            },
+                            command: 'connect'
+                        };
+
+                        if (proxy.auth) {
+                            let username = decodeURIComponent(proxy.auth.split(':').shift());
+                            let password = decodeURIComponent(proxy.auth.split(':').pop());
+                            if (proxyV2) {
+                                connectionOpts.proxy.userId = username;
+                                connectionOpts.proxy.password = password;
+                            } else if (proxyType === 4) {
+                                connectionOpts.userid = username;
+                            } else {
+                                connectionOpts.authentication = {
+                                    username,
+                                    password
+                                };
+                            }
+                        }
+
+                        socksClient.createConnection(connectionOpts, (err, info) => {
+                            if (err) {
+                                return callback(err);
+                            }
+                            return callback(null, {
+                                connection: info.socket || info
+                            });
+                        });
+                    };
+
+                    if (net.isIP(proxy.hostname)) {
+                        return connect(proxy.hostname);
+                    }
+
+                    return dns.resolve(proxy.hostname, (err, address) => {
+                        if (err) {
+                            return callback(err);
+                        }
+                        connect(Array.isArray(address) ? address[0] : address);
+                    });
+                }
+            }
+            callback(new Error('Unknown proxy configuration'));
+        };
+    }
+
+    _convertDataImages(mail, callback) {
+        if ((!this.options.attachDataUrls && !mail.data.attachDataUrls) || !mail.data.html) {
+            return callback();
+        }
+        mail.resolveContent(mail.data, 'html', (err, html) => {
+            if (err) {
+                return callback(err);
+            }
+            let cidCounter = 0;
+            html = (html || '').toString().replace(/(<img\b[^>]* src\s*=[\s"']*)(data:([^;]+);[^"'>\s]+)/gi, (match, prefix, dataUri, mimeType) => {
+                let cid = crypto.randomBytes(10).toString('hex') + '@localhost';
+                if (!mail.data.attachments) {
+                    mail.data.attachments = [];
+                }
+                if (!Array.isArray(mail.data.attachments)) {
+                    mail.data.attachments = [].concat(mail.data.attachments || []);
+                }
+                mail.data.attachments.push({
+                    path: dataUri,
+                    cid,
+                    filename: 'image-' + ++cidCounter + '.' + mimeTypes.detectExtension(mimeType)
+                });
+                return prefix + 'cid:' + cid;
+            });
+            mail.data.html = html;
+            callback();
+        });
+    }
+
+    set(key, value) {
+        return this.meta.set(key, value);
+    }
+
+    get(key) {
+        return this.meta.get(key);
+    }
+}
+
+module.exports = Mail;
diff --git a/server/node_modules/nodemailer/lib/mailer/mail-message.js b/server/node_modules/nodemailer/lib/mailer/mail-message.js
new file mode 100644
index 0000000..787ffe7
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mailer/mail-message.js
@@ -0,0 +1,320 @@
+'use strict';
+
+const shared = require('../shared');
+const MimeNode = require('../mime-node');
+const mimeFuncs = require('../mime-funcs');
+
+class MailMessage {
+    constructor(mailer, data) {
+        this.mailer = mailer;
+        this.data = {};
+        this.message = null;
+
+        data = data || {};
+        let options = mailer.options || {};
+        let defaults = mailer._defaults || {};
+
+        Object.keys(data).forEach(key => {
+            this.data[key] = data[key];
+        });
+
+        this.data.headers = this.data.headers || {};
+
+        // apply defaults
+        Object.keys(defaults).forEach(key => {
+            if (!(key in this.data)) {
+                this.data[key] = defaults[key];
+            } else if (key === 'headers') {
+                // headers is a special case. Allow setting individual default headers
+                Object.keys(defaults.headers).forEach(key => {
+                    if (!(key in this.data.headers)) {
+                        this.data.headers[key] = defaults.headers[key];
+                    }
+                });
+            }
+        });
+
+        // force specific keys from transporter options
+        ['disableFileAccess', 'disableUrlAccess', 'normalizeHeaderKey'].forEach(key => {
+            if (key in options) {
+                this.data[key] = options[key];
+            }
+        });
+    }
+
+    resolveContent(...args) {
+        return shared.resolveContent(...args);
+    }
+
+    resolveAll(callback) {
+        let keys = [
+            [this.data, 'html'],
+            [this.data, 'text'],
+            [this.data, 'watchHtml'],
+            [this.data, 'amp'],
+            [this.data, 'icalEvent']
+        ];
+
+        if (this.data.alternatives && this.data.alternatives.length) {
+            this.data.alternatives.forEach((alternative, i) => {
+                keys.push([this.data.alternatives, i]);
+            });
+        }
+
+        if (this.data.attachments && this.data.attachments.length) {
+            this.data.attachments.forEach((attachment, i) => {
+                if (!attachment.filename) {
+                    attachment.filename =
+                        (attachment.path || attachment.href || '')
+                            .split('/')
+                            .pop()
+                            .split('?')
+                            .shift() || 'attachment-' + (i + 1);
+                    if (attachment.filename.indexOf('.') < 0) {
+                        attachment.filename += '.' + mimeFuncs.detectExtension(attachment.contentType);
+                    }
+                }
+
+                if (!attachment.contentType) {
+                    attachment.contentType = mimeFuncs.detectMimeType(attachment.filename || attachment.path || attachment.href || 'bin');
+                }
+
+                keys.push([this.data.attachments, i]);
+            });
+        }
+
+        let mimeNode = new MimeNode();
+
+        let addressKeys = ['from', 'to', 'cc', 'bcc', 'sender', 'replyTo'];
+
+        addressKeys.forEach(address => {
+            let value;
+            if (this.message) {
+                value = [].concat(mimeNode._parseAddresses(this.message.getHeader(address === 'replyTo' ? 'reply-to' : address)) || []);
+            } else if (this.data[address]) {
+                value = [].concat(mimeNode._parseAddresses(this.data[address]) || []);
+            }
+            if (value && value.length) {
+                this.data[address] = value;
+            } else if (address in this.data) {
+                this.data[address] = null;
+            }
+        });
+
+        let singleKeys = ['from', 'sender', 'replyTo'];
+        singleKeys.forEach(address => {
+            if (this.data[address]) {
+                this.data[address] = this.data[address].shift();
+            }
+        });
+
+        let pos = 0;
+        let resolveNext = () => {
+            if (pos >= keys.length) {
+                return callback(null, this.data);
+            }
+            let args = keys[pos++];
+            if (!args[0] || !args[0][args[1]]) {
+                return resolveNext();
+            }
+            shared.resolveContent(...args, (err, value) => {
+                if (err) {
+                    return callback(err);
+                }
+
+                let node = {
+                    content: value
+                };
+                if (args[0][args[1]] && typeof args[0][args[1]] === 'object' && !Buffer.isBuffer(args[0][args[1]])) {
+                    Object.keys(args[0][args[1]]).forEach(key => {
+                        if (!(key in node) && !['content', 'path', 'href', 'raw'].includes(key)) {
+                            node[key] = args[0][args[1]][key];
+                        }
+                    });
+                }
+
+                args[0][args[1]] = node;
+                resolveNext();
+            });
+        };
+
+        setImmediate(() => resolveNext());
+    }
+
+    normalize(callback) {
+        let envelope = this.data.envelope || this.message.getEnvelope();
+        let messageId = this.message.messageId();
+
+        this.resolveAll((err, data) => {
+            if (err) {
+                return callback(err);
+            }
+
+            data.envelope = envelope;
+            data.messageId = messageId;
+
+            ['html', 'text', 'watchHtml', 'amp'].forEach(key => {
+                if (data[key] && data[key].content) {
+                    if (typeof data[key].content === 'string') {
+                        data[key] = data[key].content;
+                    } else if (Buffer.isBuffer(data[key].content)) {
+                        data[key] = data[key].content.toString();
+                    }
+                }
+            });
+
+            if (data.icalEvent && Buffer.isBuffer(data.icalEvent.content)) {
+                data.icalEvent.content = data.icalEvent.content.toString('base64');
+                data.icalEvent.encoding = 'base64';
+            }
+
+            if (data.alternatives && data.alternatives.length) {
+                data.alternatives.forEach(alternative => {
+                    if (alternative && alternative.content && Buffer.isBuffer(alternative.content)) {
+                        alternative.content = alternative.content.toString('base64');
+                        alternative.encoding = 'base64';
+                    }
+                });
+            }
+
+            if (data.attachments && data.attachments.length) {
+                data.attachments.forEach(attachment => {
+                    if (attachment && attachment.content && Buffer.isBuffer(attachment.content)) {
+                        attachment.content = attachment.content.toString('base64');
+                        attachment.encoding = 'base64';
+                    }
+                });
+            }
+
+            data.normalizedHeaders = {};
+            Object.keys(data.headers || {}).forEach(key => {
+                let value = [].concat(data.headers[key] || []).shift();
+                value = (value && value.value) || value;
+                if (value) {
+                    if (['references', 'in-reply-to', 'message-id', 'content-id'].includes(key)) {
+                        value = this.message._encodeHeaderValue(key, value);
+                    }
+                    data.normalizedHeaders[key] = value;
+                }
+            });
+
+            if (data.list && typeof data.list === 'object') {
+                let listHeaders = this._getListHeaders(data.list);
+                listHeaders.forEach(entry => {
+                    data.normalizedHeaders[entry.key] = entry.value.map(val => (val && val.value) || val).join(', ');
+                });
+            }
+
+            if (data.references) {
+                data.normalizedHeaders.references = this.message._encodeHeaderValue('references', data.references);
+            }
+
+            if (data.inReplyTo) {
+                data.normalizedHeaders['in-reply-to'] = this.message._encodeHeaderValue('in-reply-to', data.inReplyTo);
+            }
+
+            return callback(null, data);
+        });
+    }
+
+    setMailerHeader() {
+        if (!this.message || !this.data.xMailer) {
+            return;
+        }
+        this.message.setHeader('X-Mailer', this.data.xMailer);
+    }
+
+    setPriorityHeaders() {
+        if (!this.message || !this.data.priority) {
+            return;
+        }
+        switch ((this.data.priority || '').toString().toLowerCase()) {
+            case 'high':
+                this.message.setHeader('X-Priority', '1 (Highest)');
+                this.message.setHeader('X-MSMail-Priority', 'High');
+                this.message.setHeader('Importance', 'High');
+                break;
+            case 'low':
+                this.message.setHeader('X-Priority', '5 (Lowest)');
+                this.message.setHeader('X-MSMail-Priority', 'Low');
+                this.message.setHeader('Importance', 'Low');
+                break;
+            default:
+            // do not add anything, since all messages are 'Normal' by default
+        }
+    }
+
+    setListHeaders() {
+        if (!this.message || !this.data.list || typeof this.data.list !== 'object') {
+            return;
+        }
+        // add optional List-* headers
+        if (this.data.list && typeof this.data.list === 'object') {
+            this._getListHeaders(this.data.list).forEach(listHeader => {
+                listHeader.value.forEach(value => {
+                    this.message.addHeader(listHeader.key, value);
+                });
+            });
+        }
+    }
+
+    _getListHeaders(listData) {
+        // make sure an url looks like <protocol:url>
+        return Object.keys(listData).map(key => ({
+            key: 'list-' + key.toLowerCase().trim(),
+            value: [].concat(listData[key] || []).map(value => ({
+                prepared: true,
+                foldLines: true,
+                value: []
+                    .concat(value || [])
+                    .map(value => {
+                        if (typeof value === 'string') {
+                            value = {
+                                url: value
+                            };
+                        }
+
+                        if (value && value.url) {
+                            if (key.toLowerCase().trim() === 'id') {
+                                // List-ID: "comment" <domain>
+                                let comment = value.comment || '';
+                                if (mimeFuncs.isPlainText(comment)) {
+                                    comment = '"' + comment + '"';
+                                } else {
+                                    comment = mimeFuncs.encodeWord(comment);
+                                }
+
+                                return (value.comment ? comment + ' ' : '') + this._formatListUrl(value.url).replace(/^<[^:]+\/{,2}/, '');
+                            }
+
+                            // List-*: <http://domain> (comment)
+                            let comment = value.comment || '';
+                            if (!mimeFuncs.isPlainText(comment)) {
+                                comment = mimeFuncs.encodeWord(comment);
+                            }
+
+                            return this._formatListUrl(value.url) + (value.comment ? ' (' + comment + ')' : '');
+                        }
+
+                        return '';
+                    })
+                    .filter(value => value)
+                    .join(', ')
+            }))
+        }));
+    }
+
+    _formatListUrl(url) {
+        url = url.replace(/[\s<]+|[\s>]+/g, '');
+        if (/^(https?|mailto|ftp):/.test(url)) {
+            return '<' + url + '>';
+        }
+        if (/^[^@]+@[^@]+$/.test(url)) {
+            return '<mailto:' + url + '>';
+        }
+
+        return '<http://' + url + '>';
+    }
+}
+
+module.exports = MailMessage;
diff --git a/server/node_modules/nodemailer/lib/mime-funcs/index.js b/server/node_modules/nodemailer/lib/mime-funcs/index.js
new file mode 100644
index 0000000..6143b49
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mime-funcs/index.js
@@ -0,0 +1,628 @@
+/* eslint no-control-regex:0 */
+
+'use strict';
+
+const base64 = require('../base64');
+const qp = require('../qp');
+const mimeTypes = require('./mime-types');
+
+module.exports = {
+    /**
+     * Checks if a value is plaintext string (uses only printable 7bit chars)
+     *
+     * @param {String} value String to be tested
+     * @returns {Boolean} true if it is a plaintext string
+     */
+    isPlainText(value) {
+        if (typeof value !== 'string' || /[\x00-\x08\x0b\x0c\x0e-\x1f\u0080-\uFFFF]/.test(value)) {
+            return false;
+        } else {
+            return true;
+        }
+    },
+
+    /**
+     * Checks if a multi line string containes lines longer than the selected value.
+     *
+     * Useful when detecting if a mail message needs any processing at all –
+     * if only plaintext characters are used and lines are short, then there is
+     * no need to encode the values in any way. If the value is plaintext but has
+     * longer lines then allowed, then use format=flowed
+     *
+     * @param {Number} lineLength Max line length to check for
+     * @returns {Boolean} Returns true if there is at least one line longer than lineLength chars
+     */
+    hasLongerLines(str, lineLength) {
+        if (str.length > 128 * 1024) {
+            // do not test strings longer than 128kB
+            return true;
+        }
+        return new RegExp('^.{' + (lineLength + 1) + ',}', 'm').test(str);
+    },
+
+    /**
+     * Encodes a string or an Buffer to an UTF-8 MIME Word (rfc2047)
+     *
+     * @param {String|Buffer} data String to be encoded
+     * @param {String} mimeWordEncoding='Q' Encoding for the mime word, either Q or B
+     * @param {Number} [maxLength=0] If set, split mime words into several chunks if needed
+     * @return {String} Single or several mime words joined together
+     */
+    encodeWord(data, mimeWordEncoding, maxLength) {
+        mimeWordEncoding = (mimeWordEncoding || 'Q')
+            .toString()
+            .toUpperCase()
+            .trim()
+            .charAt(0);
+        maxLength = maxLength || 0;
+
+        let encodedStr;
+        let toCharset = 'UTF-8';
+
+        if (maxLength && maxLength > 7 + toCharset.length) {
+            maxLength -= 7 + toCharset.length;
+        }
+
+        if (mimeWordEncoding === 'Q') {
+            // https://tools.ietf.org/html/rfc2047#section-5 rule (3)
+            encodedStr = qp.encode(data).replace(/[^a-z0-9!*+\-/=]/gi, chr => {
+                let ord = chr
+                    .charCodeAt(0)
+                    .toString(16)
+                    .toUpperCase();
+                if (chr === ' ') {
+                    return '_';
+                } else {
+                    return '=' + (ord.length === 1 ? '0' + ord : ord);
+                }
+            });
+        } else if (mimeWordEncoding === 'B') {
+            encodedStr = typeof data === 'string' ? data : base64.encode(data);
+            maxLength = maxLength ? Math.max(3, ((maxLength - (maxLength % 4)) / 4) * 3) : 0;
+        }
+
+        if (maxLength && (mimeWordEncoding !== 'B' ? encodedStr : base64.encode(data)).length > maxLength) {
+            if (mimeWordEncoding === 'Q') {
+                encodedStr = this.splitMimeEncodedString(encodedStr, maxLength).join('?= =?' + toCharset + '?' + mimeWordEncoding + '?');
+            } else {
+                // RFC2047 6.3 (2) states that encoded-word must include an integral number of characters, so no chopping unicode sequences
+                let parts = [];
+                let lpart = '';
+                for (let i = 0, len = encodedStr.length; i < len; i++) {
+                    let chr = encodedStr.charAt(i);
+                    // check if we can add this character to the existing string
+                    // without breaking byte length limit
+                    if (Buffer.byteLength(lpart + chr) <= maxLength || i === 0) {
+                        lpart += chr;
+                    } else {
+                        // we hit the length limit, so push the existing string and start over
+                        parts.push(base64.encode(lpart));
+                        lpart = chr;
+                    }
+                }
+                if (lpart) {
+                    parts.push(base64.encode(lpart));
+                }
+
+                if (parts.length > 1) {
+                    encodedStr = parts.join('?= =?' + toCharset + '?' + mimeWordEncoding + '?');
+                } else {
+                    encodedStr = parts.join('');
+                }
+            }
+        } else if (mimeWordEncoding === 'B') {
+            encodedStr = base64.encode(data);
+        }
+
+        return '=?' + toCharset + '?' + mimeWordEncoding + '?' + encodedStr + (encodedStr.substr(-2) === '?=' ? '' : '?=');
+    },
+
+    /**
+     * Finds word sequences with non ascii text and converts these to mime words
+     *
+     * @param {String} value String to be encoded
+     * @param {String} mimeWordEncoding='Q' Encoding for the mime word, either Q or B
+     * @param {Number} [maxLength=0] If set, split mime words into several chunks if needed
+     * @param {Boolean} [encodeAll=false] If true and the value needs encoding then encodes entire string, not just the smallest match
+     * @return {String} String with possible mime words
+     */
+    encodeWords(value, mimeWordEncoding, maxLength, encodeAll) {
+        maxLength = maxLength || 0;
+
+        let encodedValue;
+
+        // find first word with a non-printable ascii in it
+        let firstMatch = value.match(/(?:^|\s)([^\s]*[\u0080-\uFFFF])/);
+        if (!firstMatch) {
+            return value;
+        }
+
+        if (encodeAll) {
+            // if it is requested to encode everything or the string contains something that resebles encoded word, then encode everything
+
+            return this.encodeWord(value, mimeWordEncoding, maxLength);
+        }
+
+        // find the last word with a non-printable ascii in it
+        let lastMatch = value.match(/([\u0080-\uFFFF][^\s]*)[^\u0080-\uFFFF]*$/);
+        if (!lastMatch) {
+            // should not happen
+            return value;
+        }
+
+        let startIndex =
+            firstMatch.index +
+            (
+                firstMatch[0].match(/[^\s]/) || {
+                    index: 0
+                }
+            ).index;
+        let endIndex = lastMatch.index + (lastMatch[1] || '').length;
+
+        encodedValue =
+            (startIndex ? value.substr(0, startIndex) : '') +
+            this.encodeWord(value.substring(startIndex, endIndex), mimeWordEncoding || 'Q', maxLength) +
+            (endIndex < value.length ? value.substr(endIndex) : '');
+
+        return encodedValue;
+    },
+
+    /**
+     * Joins parsed header value together as 'value; param1=value1; param2=value2'
+     * PS: We are following RFC 822 for the list of special characters that we need to keep in quotes.
+     *      Refer: https://www.w3.org/Protocols/rfc1341/4_Content-Type.html
+     * @param {Object} structured Parsed header value
+     * @return {String} joined header value
+     */
+    buildHeaderValue(structured) {
+        let paramsArray = [];
+
+        Object.keys(structured.params || {}).forEach(param => {
+            // filename might include unicode characters so it is a special case
+            // other values probably do not
+            let value = structured.params[param];
+            if (!this.isPlainText(value) || value.length >= 75) {
+                this.buildHeaderParam(param, value, 50).forEach(encodedParam => {
+                    if (!/[\s"\\;:/=(),<>@[\]?]|^[-']|'$/.test(encodedParam.value) || encodedParam.key.substr(-1) === '*') {
+                        paramsArray.push(encodedParam.key + '=' + encodedParam.value);
+                    } else {
+                        paramsArray.push(encodedParam.key + '=' + JSON.stringify(encodedParam.value));
+                    }
+                });
+            } else if (/[\s'"\\;:/=(),<>@[\]?]|^-/.test(value)) {
+                paramsArray.push(param + '=' + JSON.stringify(value));
+            } else {
+                paramsArray.push(param + '=' + value);
+            }
+        });
+
+        return structured.value + (paramsArray.length ? '; ' + paramsArray.join('; ') : '');
+    },
+
+    /**
+     * Encodes a string or an Buffer to an UTF-8 Parameter Value Continuation encoding (rfc2231)
+     * Useful for splitting long parameter values.
+     *
+     * For example
+     *      title="unicode string"
+     * becomes
+     *     title*0*=utf-8''unicode
+     *     title*1*=%20string
+     *
+     * @param {String|Buffer} data String to be encoded
+     * @param {Number} [maxLength=50] Max length for generated chunks
+     * @param {String} [fromCharset='UTF-8'] Source sharacter set
+     * @return {Array} A list of encoded keys and headers
+     */
+    buildHeaderParam(key, data, maxLength) {
+        let list = [];
+        let encodedStr = typeof data === 'string' ? data : (data || '').toString();
+        let encodedStrArr;
+        let chr, ord;
+        let line;
+        let startPos = 0;
+        let i, len;
+
+        maxLength = maxLength || 50;
+
+        // process ascii only text
+        if (this.isPlainText(data)) {
+            // check if conversion is even needed
+            if (encodedStr.length <= maxLength) {
+                return [
+                    {
+                        key,
+                        value: encodedStr
+                    }
+                ];
+            }
+
+            encodedStr = encodedStr.replace(new RegExp('.{' + maxLength + '}', 'g'), str => {
+                list.push({
+                    line: str
+                });
+                return '';
+            });
+
+            if (encodedStr) {
+                list.push({
+                    line: encodedStr
+                });
+            }
+        } else {
+            if (/[\uD800-\uDBFF]/.test(encodedStr)) {
+                // string containts surrogate pairs, so normalize it to an array of bytes
+                encodedStrArr = [];
+                for (i = 0, len = encodedStr.length; i < len; i++) {
+                    chr = encodedStr.charAt(i);
+                    ord = chr.charCodeAt(0);
+                    if (ord >= 0xd800 && ord <= 0xdbff && i < len - 1) {
+                        chr += encodedStr.charAt(i + 1);
+                        encodedStrArr.push(chr);
+                        i++;
+                    } else {
+                        encodedStrArr.push(chr);
+                    }
+                }
+                encodedStr = encodedStrArr;
+            }
+
+            // first line includes the charset and language info and needs to be encoded
+            // even if it does not contain any unicode characters
+            line = 'utf-8\x27\x27';
+            let encoded = true;
+            startPos = 0;
+
+            // process text with unicode or special chars
+            for (i = 0, len = encodedStr.length; i < len; i++) {
+                chr = encodedStr[i];
+
+                if (encoded) {
+                    chr = this.safeEncodeURIComponent(chr);
+                } else {
+                    // try to urlencode current char
+                    chr = chr === ' ' ? chr : this.safeEncodeURIComponent(chr);
+                    // By default it is not required to encode a line, the need
+                    // only appears when the string contains unicode or special chars
+                    // in this case we start processing the line over and encode all chars
+                    if (chr !== encodedStr[i]) {
+                        // Check if it is even possible to add the encoded char to the line
+                        // If not, there is no reason to use this line, just push it to the list
+                        // and start a new line with the char that needs encoding
+                        if ((this.safeEncodeURIComponent(line) + chr).length >= maxLength) {
+                            list.push({
+                                line,
+                                encoded
+                            });
+                            line = '';
+                            startPos = i - 1;
+                        } else {
+                            encoded = true;
+                            i = startPos;
+                            line = '';
+                            continue;
+                        }
+                    }
+                }
+
+                // if the line is already too long, push it to the list and start a new one
+                if ((line + chr).length >= maxLength) {
+                    list.push({
+                        line,
+                        encoded
+                    });
+                    line = chr = encodedStr[i] === ' ' ? ' ' : this.safeEncodeURIComponent(encodedStr[i]);
+                    if (chr === encodedStr[i]) {
+                        encoded = false;
+                        startPos = i - 1;
+                    } else {
+                        encoded = true;
+                    }
+                } else {
+                    line += chr;
+                }
+            }
+
+            if (line) {
+                list.push({
+                    line,
+                    encoded
+                });
+            }
+        }
+
+        return list.map((item, i) => ({
+            // encoded lines: {name}*{part}*
+            // unencoded lines: {name}*{part}
+            // if any line needs to be encoded then the first line (part==0) is always encoded
+            key: key + '*' + i + (item.encoded ? '*' : ''),
+            value: item.line
+        }));
+    },
+
+    /**
+     * Parses a header value with key=value arguments into a structured
+     * object.
+     *
+     *   parseHeaderValue('content-type: text/plain; CHARSET='UTF-8'') ->
+     *   {
+     *     'value': 'text/plain',
+     *     'params': {
+     *       'charset': 'UTF-8'
+     *     }
+     *   }
+     *
+     * @param {String} str Header value
+     * @return {Object} Header value as a parsed structure
+     */
+    parseHeaderValue(str) {
+        let response = {
+            value: false,
+            params: {}
+        };
+        let key = false;
+        let value = '';
+        let type = 'value';
+        let quote = false;
+        let escaped = false;
+        let chr;
+
+        for (let i = 0, len = str.length; i < len; i++) {
+            chr = str.charAt(i);
+            if (type === 'key') {
+                if (chr === '=') {
+                    key = value.trim().toLowerCase();
+                    type = 'value';
+                    value = '';
+                    continue;
+                }
+                value += chr;
+            } else {
+                if (escaped) {
+                    value += chr;
+                } else if (chr === '\\') {
+                    escaped = true;
+                    continue;
+                } else if (quote && chr === quote) {
+                    quote = false;
+                } else if (!quote && chr === '"') {
+                    quote = chr;
+                } else if (!quote && chr === ';') {
+                    if (key === false) {
+                        response.value = value.trim();
+                    } else {
+                        response.params[key] = value.trim();
+                    }
+                    type = 'key';
+                    value = '';
+                } else {
+                    value += chr;
+                }
+                escaped = false;
+            }
+        }
+
+        if (type === 'value') {
+            if (key === false) {
+                response.value = value.trim();
+            } else {
+                response.params[key] = value.trim();
+            }
+        } else if (value.trim()) {
+            response.params[value.trim().toLowerCase()] = '';
+        }
+
+        // handle parameter value continuations
+        // https://tools.ietf.org/html/rfc2231#section-3
+
+        // preprocess values
+        Object.keys(response.params).forEach(key => {
+            let actualKey, nr, match, value;
+            if ((match = key.match(/(\*(\d+)|\*(\d+)\*|\*)$/))) {
+                actualKey = key.substr(0, match.index);
+                nr = Number(match[2] || match[3]) || 0;
+
+                if (!response.params[actualKey] || typeof response.params[actualKey] !== 'object') {
+                    response.params[actualKey] = {
+                        charset: false,
+                        values: []
+                    };
+                }
+
+                value = response.params[key];
+
+                if (nr === 0 && match[0].substr(-1) === '*' && (match = value.match(/^([^']*)'[^']*'(.*)$/))) {
+                    response.params[actualKey].charset = match[1] || 'iso-8859-1';
+                    value = match[2];
+                }
+
+                response.params[actualKey].values[nr] = value;
+
+                // remove the old reference
+                delete response.params[key];
+            }
+        });
+
+        // concatenate split rfc2231 strings and convert encoded strings to mime encoded words
+        Object.keys(response.params).forEach(key => {
+            let value;
+            if (response.params[key] && Array.isArray(response.params[key].values)) {
+                value = response.params[key].values.map(val => val || '').join('');
+
+                if (response.params[key].charset) {
+                    // convert "%AB" to "=?charset?Q?=AB?="
+                    response.params[key] =
+                        '=?' +
+                        response.params[key].charset +
+                        '?Q?' +
+                        value
+                            // fix invalidly encoded chars
+                            .replace(/[=?_\s]/g, s => {
+                                let c = s.charCodeAt(0).toString(16);
+                                if (s === ' ') {
+                                    return '_';
+                                } else {
+                                    return '%' + (c.length < 2 ? '0' : '') + c;
+                                }
+                            })
+                            // change from urlencoding to percent encoding
+                            .replace(/%/g, '=') +
+                        '?=';
+                } else {
+                    response.params[key] = value;
+                }
+            }
+        });
+
+        return response;
+    },
+
+    /**
+     * Returns file extension for a content type string. If no suitable extensions
+     * are found, 'bin' is used as the default extension
+     *
+     * @param {String} mimeType Content type to be checked for
+     * @return {String} File extension
+     */
+    detectExtension: mimeType => mimeTypes.detectExtension(mimeType),
+
+    /**
+     * Returns content type for a file extension. If no suitable content types
+     * are found, 'application/octet-stream' is used as the default content type
+     *
+     * @param {String} extension Extension to be checked for
+     * @return {String} File extension
+     */
+    detectMimeType: extension => mimeTypes.detectMimeType(extension),
+
+    /**
+     * Folds long lines, useful for folding header lines (afterSpace=false) and
+     * flowed text (afterSpace=true)
+     *
+     * @param {String} str String to be folded
+     * @param {Number} [lineLength=76] Maximum length of a line
+     * @param {Boolean} afterSpace If true, leave a space in th end of a line
+     * @return {String} String with folded lines
+     */
+    foldLines(str, lineLength, afterSpace) {
+        str = (str || '').toString();
+        lineLength = lineLength || 76;
+
+        let pos = 0,
+            len = str.length,
+            result = '',
+            line,
+            match;
+
+        while (pos < len) {
+            line = str.substr(pos, lineLength);
+            if (line.length < lineLength) {
+                result += line;
+                break;
+            }
+            if ((match = line.match(/^[^\n\r]*(\r?\n|\r)/))) {
+                line = match[0];
+                result += line;
+                pos += line.length;
+                continue;
+            } else if ((match = line.match(/(\s+)[^\s]*$/)) && match[0].length - (afterSpace ? (match[1] || '').length : 0) < line.length) {
+                line = line.substr(0, line.length - (match[0].length - (afterSpace ? (match[1] || '').length : 0)));
+            } else if ((match = str.substr(pos + line.length).match(/^[^\s]+(\s*)/))) {
+                line = line + match[0].substr(0, match[0].length - (!afterSpace ? (match[1] || '').length : 0));
+            }
+
+            result += line;
+            pos += line.length;
+            if (pos < len) {
+                result += '\r\n';
+            }
+        }
+
+        return result;
+    },
+
+    /**
+     * Splits a mime encoded string. Needed for dividing mime words into smaller chunks
+     *
+     * @param {String} str Mime encoded string to be split up
+     * @param {Number} maxlen Maximum length of characters for one part (minimum 12)
+     * @return {Array} Split string
+     */
+    splitMimeEncodedString: (str, maxlen) => {
+        let curLine,
+            match,
+            chr,
+            done,
+            lines = [];
+
+        // require at least 12 symbols to fit possible 4 octet UTF-8 sequences
+        maxlen = Math.max(maxlen || 0, 12);
+
+        while (str.length) {
+            curLine = str.substr(0, maxlen);
+
+            // move incomplete escaped char back to main
+            if ((match = curLine.match(/[=][0-9A-F]?$/i))) {
+                curLine = curLine.substr(0, match.index);
+            }
+
+            done = false;
+            while (!done) {
+                done = true;
+                // check if not middle of a unicode char sequence
+                if ((match = str.substr(curLine.length).match(/^[=]([0-9A-F]{2})/i))) {
+                    chr = parseInt(match[1], 16);
+                    // invalid sequence, move one char back anc recheck
+                    if (chr < 0xc2 && chr > 0x7f) {
+                        curLine = curLine.substr(0, curLine.length - 3);
+                        done = false;
+                    }
+                }
+            }
+
+            if (curLine.length) {
+                lines.push(curLine);
+            }
+            str = str.substr(curLine.length);
+        }
+
+        return lines;
+    },
+
+    encodeURICharComponent: chr => {
+        let res = '';
+        let ord = chr
+            .charCodeAt(0)
+            .toString(16)
+            .toUpperCase();
+
+        if (ord.length % 2) {
+            ord = '0' + ord;
+        }
+
+        if (ord.length > 2) {
+            for (let i = 0, len = ord.length / 2; i < len; i++) {
+                res += '%' + ord.substr(i, 2);
+            }
+        } else {
+            res += '%' + ord;
+        }
+
+        return res;
+    },
+
+    safeEncodeURIComponent(str) {
+        str = (str || '').toString();
+
+        try {
+            // might throw if we try to encode invalid sequences, eg. partial emoji
+            str = encodeURIComponent(str);
+        } catch (E) {
+            // should never run
+            return str.replace(/[^\x00-\x1F *'()<>@,;:\\"[\]?=\u007F-\uFFFF]+/g, '');
+        }
+
+        // ensure chars that are not handled by encodeURICompent are converted as well
+        return str.replace(/[\x00-\x1F *'()<>@,;:\\"[\]?=\u007F-\uFFFF]/g, chr => this.encodeURICharComponent(chr));
+    }
+};
diff --git a/server/node_modules/nodemailer/lib/mime-funcs/mime-types.js b/server/node_modules/nodemailer/lib/mime-funcs/mime-types.js
new file mode 100644
index 0000000..85f7be6
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mime-funcs/mime-types.js
@@ -0,0 +1,2109 @@
+/* eslint quote-props: 0 */
+
+'use strict';
+
+const path = require('path');
+
+const defaultMimeType = 'application/octet-stream';
+const defaultExtension = 'bin';
+
+const mimeTypes = new Map([
+    ['application/acad', 'dwg'],
+    ['application/applixware', 'aw'],
+    ['application/arj', 'arj'],
+    ['application/atom+xml', 'xml'],
+    ['application/atomcat+xml', 'atomcat'],
+    ['application/atomsvc+xml', 'atomsvc'],
+    ['application/base64', ['mm', 'mme']],
+    ['application/binhex', 'hqx'],
+    ['application/binhex4', 'hqx'],
+    ['application/book', ['book', 'boo']],
+    ['application/ccxml+xml,', 'ccxml'],
+    ['application/cdf', 'cdf'],
+    ['application/cdmi-capability', 'cdmia'],
+    ['application/cdmi-container', 'cdmic'],
+    ['application/cdmi-domain', 'cdmid'],
+    ['application/cdmi-object', 'cdmio'],
+    ['application/cdmi-queue', 'cdmiq'],
+    ['application/clariscad', 'ccad'],
+    ['application/commonground', 'dp'],
+    ['application/cu-seeme', 'cu'],
+    ['application/davmount+xml', 'davmount'],
+    ['application/drafting', 'drw'],
+    ['application/dsptype', 'tsp'],
+    ['application/dssc+der', 'dssc'],
+    ['application/dssc+xml', 'xdssc'],
+    ['application/dxf', 'dxf'],
+    ['application/ecmascript', ['js', 'es']],
+    ['application/emma+xml', 'emma'],
+    ['application/envoy', 'evy'],
+    ['application/epub+zip', 'epub'],
+    ['application/excel', ['xls', 'xl', 'xla', 'xlb', 'xlc', 'xld', 'xlk', 'xll', 'xlm', 'xlt', 'xlv', 'xlw']],
+    ['application/exi', 'exi'],
+    ['application/font-tdpfr', 'pfr'],
+    ['application/fractals', 'fif'],
+    ['application/freeloader', 'frl'],
+    ['application/futuresplash', 'spl'],
+    ['application/gnutar', 'tgz'],
+    ['application/groupwise', 'vew'],
+    ['application/hlp', 'hlp'],
+    ['application/hta', 'hta'],
+    ['application/hyperstudio', 'stk'],
+    ['application/i-deas', 'unv'],
+    ['application/iges', ['iges', 'igs']],
+    ['application/inf', 'inf'],
+    ['application/internet-property-stream', 'acx'],
+    ['application/ipfix', 'ipfix'],
+    ['application/java', 'class'],
+    ['application/java-archive', 'jar'],
+    ['application/java-byte-code', 'class'],
+    ['application/java-serialized-object', 'ser'],
+    ['application/java-vm', 'class'],
+    ['application/javascript', 'js'],
+    ['application/json', 'json'],
+    ['application/lha', 'lha'],
+    ['application/lzx', 'lzx'],
+    ['application/mac-binary', 'bin'],
+    ['application/mac-binhex', 'hqx'],
+    ['application/mac-binhex40', 'hqx'],
+    ['application/mac-compactpro', 'cpt'],
+    ['application/macbinary', 'bin'],
+    ['application/mads+xml', 'mads'],
+    ['application/marc', 'mrc'],
+    ['application/marcxml+xml', 'mrcx'],
+    ['application/mathematica', 'ma'],
+    ['application/mathml+xml', 'mathml'],
+    ['application/mbedlet', 'mbd'],
+    ['application/mbox', 'mbox'],
+    ['application/mcad', 'mcd'],
+    ['application/mediaservercontrol+xml', 'mscml'],
+    ['application/metalink4+xml', 'meta4'],
+    ['application/mets+xml', 'mets'],
+    ['application/mime', 'aps'],
+    ['application/mods+xml', 'mods'],
+    ['application/mp21', 'm21'],
+    ['application/mp4', 'mp4'],
+    ['application/mspowerpoint', ['ppt', 'pot', 'pps', 'ppz']],
+    ['application/msword', ['doc', 'dot', 'w6w', 'wiz', 'word']],
+    ['application/mswrite', 'wri'],
+    ['application/mxf', 'mxf'],
+    ['application/netmc', 'mcp'],
+    ['application/octet-stream', ['*']],
+    ['application/oda', 'oda'],
+    ['application/oebps-package+xml', 'opf'],
+    ['application/ogg', 'ogx'],
+    ['application/olescript', 'axs'],
+    ['application/onenote', 'onetoc'],
+    ['application/patch-ops-error+xml', 'xer'],
+    ['application/pdf', 'pdf'],
+    ['application/pgp-encrypted', 'asc'],
+    ['application/pgp-signature', 'pgp'],
+    ['application/pics-rules', 'prf'],
+    ['application/pkcs-12', 'p12'],
+    ['application/pkcs-crl', 'crl'],
+    ['application/pkcs10', 'p10'],
+    ['application/pkcs7-mime', ['p7c', 'p7m']],
+    ['application/pkcs7-signature', 'p7s'],
+    ['application/pkcs8', 'p8'],
+    ['application/pkix-attr-cert', 'ac'],
+    ['application/pkix-cert', ['cer', 'crt']],
+    ['application/pkix-crl', 'crl'],
+    ['application/pkix-pkipath', 'pkipath'],
+    ['application/pkixcmp', 'pki'],
+    ['application/plain', 'text'],
+    ['application/pls+xml', 'pls'],
+    ['application/postscript', ['ps', 'ai', 'eps']],
+    ['application/powerpoint', 'ppt'],
+    ['application/pro_eng', ['part', 'prt']],
+    ['application/prs.cww', 'cww'],
+    ['application/pskc+xml', 'pskcxml'],
+    ['application/rdf+xml', 'rdf'],
+    ['application/reginfo+xml', 'rif'],
+    ['application/relax-ng-compact-syntax', 'rnc'],
+    ['application/resource-lists+xml', 'rl'],
+    ['application/resource-lists-diff+xml', 'rld'],
+    ['application/ringing-tones', 'rng'],
+    ['application/rls-services+xml', 'rs'],
+    ['application/rsd+xml', 'rsd'],
+    ['application/rss+xml', 'xml'],
+    ['application/rtf', ['rtf', 'rtx']],
+    ['application/sbml+xml', 'sbml'],
+    ['application/scvp-cv-request', 'scq'],
+    ['application/scvp-cv-response', 'scs'],
+    ['application/scvp-vp-request', 'spq'],
+    ['application/scvp-vp-response', 'spp'],
+    ['application/sdp', 'sdp'],
+    ['application/sea', 'sea'],
+    ['application/set', 'set'],
+    ['application/set-payment-initiation', 'setpay'],
+    ['application/set-registration-initiation', 'setreg'],
+    ['application/shf+xml', 'shf'],
+    ['application/sla', 'stl'],
+    ['application/smil', ['smi', 'smil']],
+    ['application/smil+xml', 'smi'],
+    ['application/solids', 'sol'],
+    ['application/sounder', 'sdr'],
+    ['application/sparql-query', 'rq'],
+    ['application/sparql-results+xml', 'srx'],
+    ['application/srgs', 'gram'],
+    ['application/srgs+xml', 'grxml'],
+    ['application/sru+xml', 'sru'],
+    ['application/ssml+xml', 'ssml'],
+    ['application/step', ['step', 'stp']],
+    ['application/streamingmedia', 'ssm'],
+    ['application/tei+xml', 'tei'],
+    ['application/thraud+xml', 'tfi'],
+    ['application/timestamped-data', 'tsd'],
+    ['application/toolbook', 'tbk'],
+    ['application/vda', 'vda'],
+    ['application/vnd.3gpp.pic-bw-large', 'plb'],
+    ['application/vnd.3gpp.pic-bw-small', 'psb'],
+    ['application/vnd.3gpp.pic-bw-var', 'pvb'],
+    ['application/vnd.3gpp2.tcap', 'tcap'],
+    ['application/vnd.3m.post-it-notes', 'pwn'],
+    ['application/vnd.accpac.simply.aso', 'aso'],
+    ['application/vnd.accpac.simply.imp', 'imp'],
+    ['application/vnd.acucobol', 'acu'],
+    ['application/vnd.acucorp', 'atc'],
+    ['application/vnd.adobe.air-application-installer-package+zip', 'air'],
+    ['application/vnd.adobe.fxp', 'fxp'],
+    ['application/vnd.adobe.xdp+xml', 'xdp'],
+    ['application/vnd.adobe.xfdf', 'xfdf'],
+    ['application/vnd.ahead.space', 'ahead'],
+    ['application/vnd.airzip.filesecure.azf', 'azf'],
+    ['application/vnd.airzip.filesecure.azs', 'azs'],
+    ['application/vnd.amazon.ebook', 'azw'],
+    ['application/vnd.americandynamics.acc', 'acc'],
+    ['application/vnd.amiga.ami', 'ami'],
+    ['application/vnd.android.package-archive', 'apk'],
+    ['application/vnd.anser-web-certificate-issue-initiation', 'cii'],
+    ['application/vnd.anser-web-funds-transfer-initiation', 'fti'],
+    ['application/vnd.antix.game-component', 'atx'],
+    ['application/vnd.apple.installer+xml', 'mpkg'],
+    ['application/vnd.apple.mpegurl', 'm3u8'],
+    ['application/vnd.aristanetworks.swi', 'swi'],
+    ['application/vnd.audiograph', 'aep'],
+    ['application/vnd.blueice.multipass', 'mpm'],
+    ['application/vnd.bmi', 'bmi'],
+    ['application/vnd.businessobjects', 'rep'],
+    ['application/vnd.chemdraw+xml', 'cdxml'],
+    ['application/vnd.chipnuts.karaoke-mmd', 'mmd'],
+    ['application/vnd.cinderella', 'cdy'],
+    ['application/vnd.claymore', 'cla'],
+    ['application/vnd.cloanto.rp9', 'rp9'],
+    ['application/vnd.clonk.c4group', 'c4g'],
+    ['application/vnd.cluetrust.cartomobile-config', 'c11amc'],
+    ['application/vnd.cluetrust.cartomobile-config-pkg', 'c11amz'],
+    ['application/vnd.commonspace', 'csp'],
+    ['application/vnd.contact.cmsg', 'cdbcmsg'],
+    ['application/vnd.cosmocaller', 'cmc'],
+    ['application/vnd.crick.clicker', 'clkx'],
+    ['application/vnd.crick.clicker.keyboard', 'clkk'],
+    ['application/vnd.crick.clicker.palette', 'clkp'],
+    ['application/vnd.crick.clicker.template', 'clkt'],
+    ['application/vnd.crick.clicker.wordbank', 'clkw'],
+    ['application/vnd.criticaltools.wbs+xml', 'wbs'],
+    ['application/vnd.ctc-posml', 'pml'],
+    ['application/vnd.cups-ppd', 'ppd'],
+    ['application/vnd.curl.car', 'car'],
+    ['application/vnd.curl.pcurl', 'pcurl'],
+    ['application/vnd.data-vision.rdz', 'rdz'],
+    ['application/vnd.denovo.fcselayout-link', 'fe_launch'],
+    ['application/vnd.dna', 'dna'],
+    ['application/vnd.dolby.mlp', 'mlp'],
+    ['application/vnd.dpgraph', 'dpg'],
+    ['application/vnd.dreamfactory', 'dfac'],
+    ['application/vnd.dvb.ait', 'ait'],
+    ['application/vnd.dvb.service', 'svc'],
+    ['application/vnd.dynageo', 'geo'],
+    ['application/vnd.ecowin.chart', 'mag'],
+    ['application/vnd.enliven', 'nml'],
+    ['application/vnd.epson.esf', 'esf'],
+    ['application/vnd.epson.msf', 'msf'],
+    ['application/vnd.epson.quickanime', 'qam'],
+    ['application/vnd.epson.salt', 'slt'],
+    ['application/vnd.epson.ssf', 'ssf'],
+    ['application/vnd.eszigno3+xml', 'es3'],
+    ['application/vnd.ezpix-album', 'ez2'],
+    ['application/vnd.ezpix-package', 'ez3'],
+    ['application/vnd.fdf', 'fdf'],
+    ['application/vnd.fdsn.seed', 'seed'],
+    ['application/vnd.flographit', 'gph'],
+    ['application/vnd.fluxtime.clip', 'ftc'],
+    ['application/vnd.framemaker', 'fm'],
+    ['application/vnd.frogans.fnc', 'fnc'],
+    ['application/vnd.frogans.ltf', 'ltf'],
+    ['application/vnd.fsc.weblaunch', 'fsc'],
+    ['application/vnd.fujitsu.oasys', 'oas'],
+    ['application/vnd.fujitsu.oasys2', 'oa2'],
+    ['application/vnd.fujitsu.oasys3', 'oa3'],
+    ['application/vnd.fujitsu.oasysgp', 'fg5'],
+    ['application/vnd.fujitsu.oasysprs', 'bh2'],
+    ['application/vnd.fujixerox.ddd', 'ddd'],
+    ['application/vnd.fujixerox.docuworks', 'xdw'],
+    ['application/vnd.fujixerox.docuworks.binder', 'xbd'],
+    ['application/vnd.fuzzysheet', 'fzs'],
+    ['application/vnd.genomatix.tuxedo', 'txd'],
+    ['application/vnd.geogebra.file', 'ggb'],
+    ['application/vnd.geogebra.tool', 'ggt'],
+    ['application/vnd.geometry-explorer', 'gex'],
+    ['application/vnd.geonext', 'gxt'],
+    ['application/vnd.geoplan', 'g2w'],
+    ['application/vnd.geospace', 'g3w'],
+    ['application/vnd.gmx', 'gmx'],
+    ['application/vnd.google-earth.kml+xml', 'kml'],
+    ['application/vnd.google-earth.kmz', 'kmz'],
+    ['application/vnd.grafeq', 'gqf'],
+    ['application/vnd.groove-account', 'gac'],
+    ['application/vnd.groove-help', 'ghf'],
+    ['application/vnd.groove-identity-message', 'gim'],
+    ['application/vnd.groove-injector', 'grv'],
+    ['application/vnd.groove-tool-message', 'gtm'],
+    ['application/vnd.groove-tool-template', 'tpl'],
+    ['application/vnd.groove-vcard', 'vcg'],
+    ['application/vnd.hal+xml', 'hal'],
+    ['application/vnd.handheld-entertainment+xml', 'zmm'],
+    ['application/vnd.hbci', 'hbci'],
+    ['application/vnd.hhe.lesson-player', 'les'],
+    ['application/vnd.hp-hpgl', ['hgl', 'hpg', 'hpgl']],
+    ['application/vnd.hp-hpid', 'hpid'],
+    ['application/vnd.hp-hps', 'hps'],
+    ['application/vnd.hp-jlyt', 'jlt'],
+    ['application/vnd.hp-pcl', 'pcl'],
+    ['application/vnd.hp-pclxl', 'pclxl'],
+    ['application/vnd.hydrostatix.sof-data', 'sfd-hdstx'],
+    ['application/vnd.hzn-3d-crossword', 'x3d'],
+    ['application/vnd.ibm.minipay', 'mpy'],
+    ['application/vnd.ibm.modcap', 'afp'],
+    ['application/vnd.ibm.rights-management', 'irm'],
+    ['application/vnd.ibm.secure-container', 'sc'],
+    ['application/vnd.iccprofile', 'icc'],
+    ['application/vnd.igloader', 'igl'],
+    ['application/vnd.immervision-ivp', 'ivp'],
+    ['application/vnd.immervision-ivu', 'ivu'],
+    ['application/vnd.insors.igm', 'igm'],
+    ['application/vnd.intercon.formnet', 'xpw'],
+    ['application/vnd.intergeo', 'i2g'],
+    ['application/vnd.intu.qbo', 'qbo'],
+    ['application/vnd.intu.qfx', 'qfx'],
+    ['application/vnd.ipunplugged.rcprofile', 'rcprofile'],
+    ['application/vnd.irepository.package+xml', 'irp'],
+    ['application/vnd.is-xpr', 'xpr'],
+    ['application/vnd.isac.fcs', 'fcs'],
+    ['application/vnd.jam', 'jam'],
+    ['application/vnd.jcp.javame.midlet-rms', 'rms'],
+    ['application/vnd.jisp', 'jisp'],
+    ['application/vnd.joost.joda-archive', 'joda'],
+    ['application/vnd.kahootz', 'ktz'],
+    ['application/vnd.kde.karbon', 'karbon'],
+    ['application/vnd.kde.kchart', 'chrt'],
+    ['application/vnd.kde.kformula', 'kfo'],
+    ['application/vnd.kde.kivio', 'flw'],
+    ['application/vnd.kde.kontour', 'kon'],
+    ['application/vnd.kde.kpresenter', 'kpr'],
+    ['application/vnd.kde.kspread', 'ksp'],
+    ['application/vnd.kde.kword', 'kwd'],
+    ['application/vnd.kenameaapp', 'htke'],
+    ['application/vnd.kidspiration', 'kia'],
+    ['application/vnd.kinar', 'kne'],
+    ['application/vnd.koan', 'skp'],
+    ['application/vnd.kodak-descriptor', 'sse'],
+    ['application/vnd.las.las+xml', 'lasxml'],
+    ['application/vnd.llamagraphics.life-balance.desktop', 'lbd'],
+    ['application/vnd.llamagraphics.life-balance.exchange+xml', 'lbe'],
+    ['application/vnd.lotus-1-2-3', '123'],
+    ['application/vnd.lotus-approach', 'apr'],
+    ['application/vnd.lotus-freelance', 'pre'],
+    ['application/vnd.lotus-notes', 'nsf'],
+    ['application/vnd.lotus-organizer', 'org'],
+    ['application/vnd.lotus-screencam', 'scm'],
+    ['application/vnd.lotus-wordpro', 'lwp'],
+    ['application/vnd.macports.portpkg', 'portpkg'],
+    ['application/vnd.mcd', 'mcd'],
+    ['application/vnd.medcalcdata', 'mc1'],
+    ['application/vnd.mediastation.cdkey', 'cdkey'],
+    ['application/vnd.mfer', 'mwf'],
+    ['application/vnd.mfmp', 'mfm'],
+    ['application/vnd.micrografx.flo', 'flo'],
+    ['application/vnd.micrografx.igx', 'igx'],
+    ['application/vnd.mif', 'mif'],
+    ['application/vnd.mobius.daf', 'daf'],
+    ['application/vnd.mobius.dis', 'dis'],
+    ['application/vnd.mobius.mbk', 'mbk'],
+    ['application/vnd.mobius.mqy', 'mqy'],
+    ['application/vnd.mobius.msl', 'msl'],
+    ['application/vnd.mobius.plc', 'plc'],
+    ['application/vnd.mobius.txf', 'txf'],
+    ['application/vnd.mophun.application', 'mpn'],
+    ['application/vnd.mophun.certificate', 'mpc'],
+    ['application/vnd.mozilla.xul+xml', 'xul'],
+    ['application/vnd.ms-artgalry', 'cil'],
+    ['application/vnd.ms-cab-compressed', 'cab'],
+    ['application/vnd.ms-excel', ['xls', 'xla', 'xlc', 'xlm', 'xlt', 'xlw', 'xlb', 'xll']],
+    ['application/vnd.ms-excel.addin.macroenabled.12', 'xlam'],
+    ['application/vnd.ms-excel.sheet.binary.macroenabled.12', 'xlsb'],
+    ['application/vnd.ms-excel.sheet.macroenabled.12', 'xlsm'],
+    ['application/vnd.ms-excel.template.macroenabled.12', 'xltm'],
+    ['application/vnd.ms-fontobject', 'eot'],
+    ['application/vnd.ms-htmlhelp', 'chm'],
+    ['application/vnd.ms-ims', 'ims'],
+    ['application/vnd.ms-lrm', 'lrm'],
+    ['application/vnd.ms-officetheme', 'thmx'],
+    ['application/vnd.ms-outlook', 'msg'],
+    ['application/vnd.ms-pki.certstore', 'sst'],
+    ['application/vnd.ms-pki.pko', 'pko'],
+    ['application/vnd.ms-pki.seccat', 'cat'],
+    ['application/vnd.ms-pki.stl', 'stl'],
+    ['application/vnd.ms-pkicertstore', 'sst'],
+    ['application/vnd.ms-pkiseccat', 'cat'],
+    ['application/vnd.ms-pkistl', 'stl'],
+    ['application/vnd.ms-powerpoint', ['ppt', 'pot', 'pps', 'ppa', 'pwz']],
+    ['application/vnd.ms-powerpoint.addin.macroenabled.12', 'ppam'],
+    ['application/vnd.ms-powerpoint.presentation.macroenabled.12', 'pptm'],
+    ['application/vnd.ms-powerpoint.slide.macroenabled.12', 'sldm'],
+    ['application/vnd.ms-powerpoint.slideshow.macroenabled.12', 'ppsm'],
+    ['application/vnd.ms-powerpoint.template.macroenabled.12', 'potm'],
+    ['application/vnd.ms-project', 'mpp'],
+    ['application/vnd.ms-word.document.macroenabled.12', 'docm'],
+    ['application/vnd.ms-word.template.macroenabled.12', 'dotm'],
+    ['application/vnd.ms-works', ['wks', 'wcm', 'wdb', 'wps']],
+    ['application/vnd.ms-wpl', 'wpl'],
+    ['application/vnd.ms-xpsdocument', 'xps'],
+    ['application/vnd.mseq', 'mseq'],
+    ['application/vnd.musician', 'mus'],
+    ['application/vnd.muvee.style', 'msty'],
+    ['application/vnd.neurolanguage.nlu', 'nlu'],
+    ['application/vnd.noblenet-directory', 'nnd'],
+    ['application/vnd.noblenet-sealer', 'nns'],
+    ['application/vnd.noblenet-web', 'nnw'],
+    ['application/vnd.nokia.configuration-message', 'ncm'],
+    ['application/vnd.nokia.n-gage.data', 'ngdat'],
+    ['application/vnd.nokia.n-gage.symbian.install', 'n-gage'],
+    ['application/vnd.nokia.radio-preset', 'rpst'],
+    ['application/vnd.nokia.radio-presets', 'rpss'],
+    ['application/vnd.nokia.ringing-tone', 'rng'],
+    ['application/vnd.novadigm.edm', 'edm'],
+    ['application/vnd.novadigm.edx', 'edx'],
+    ['application/vnd.novadigm.ext', 'ext'],
+    ['application/vnd.oasis.opendocument.chart', 'odc'],
+    ['application/vnd.oasis.opendocument.chart-template', 'otc'],
+    ['application/vnd.oasis.opendocument.database', 'odb'],
+    ['application/vnd.oasis.opendocument.formula', 'odf'],
+    ['application/vnd.oasis.opendocument.formula-template', 'odft'],
+    ['application/vnd.oasis.opendocument.graphics', 'odg'],
+    ['application/vnd.oasis.opendocument.graphics-template', 'otg'],
+    ['application/vnd.oasis.opendocument.image', 'odi'],
+    ['application/vnd.oasis.opendocument.image-template', 'oti'],
+    ['application/vnd.oasis.opendocument.presentation', 'odp'],
+    ['application/vnd.oasis.opendocument.presentation-template', 'otp'],
+    ['application/vnd.oasis.opendocument.spreadsheet', 'ods'],
+    ['application/vnd.oasis.opendocument.spreadsheet-template', 'ots'],
+    ['application/vnd.oasis.opendocument.text', 'odt'],
+    ['application/vnd.oasis.opendocument.text-master', 'odm'],
+    ['application/vnd.oasis.opendocument.text-template', 'ott'],
+    ['application/vnd.oasis.opendocument.text-web', 'oth'],
+    ['application/vnd.olpc-sugar', 'xo'],
+    ['application/vnd.oma.dd2+xml', 'dd2'],
+    ['application/vnd.openofficeorg.extension', 'oxt'],
+    ['application/vnd.openxmlformats-officedocument.presentationml.presentation', 'pptx'],
+    ['application/vnd.openxmlformats-officedocument.presentationml.slide', 'sldx'],
+    ['application/vnd.openxmlformats-officedocument.presentationml.slideshow', 'ppsx'],
+    ['application/vnd.openxmlformats-officedocument.presentationml.template', 'potx'],
+    ['application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'xlsx'],
+    ['application/vnd.openxmlformats-officedocument.spreadsheetml.template', 'xltx'],
+    ['application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'docx'],
+    ['application/vnd.openxmlformats-officedocument.wordprocessingml.template', 'dotx'],
+    ['application/vnd.osgeo.mapguide.package', 'mgp'],
+    ['application/vnd.osgi.dp', 'dp'],
+    ['application/vnd.palm', 'pdb'],
+    ['application/vnd.pawaafile', 'paw'],
+    ['application/vnd.pg.format', 'str'],
+    ['application/vnd.pg.osasli', 'ei6'],
+    ['application/vnd.picsel', 'efif'],
+    ['application/vnd.pmi.widget', 'wg'],
+    ['application/vnd.pocketlearn', 'plf'],
+    ['application/vnd.powerbuilder6', 'pbd'],
+    ['application/vnd.previewsystems.box', 'box'],
+    ['application/vnd.proteus.magazine', 'mgz'],
+    ['application/vnd.publishare-delta-tree', 'qps'],
+    ['application/vnd.pvi.ptid1', 'ptid'],
+    ['application/vnd.quark.quarkxpress', 'qxd'],
+    ['application/vnd.realvnc.bed', 'bed'],
+    ['application/vnd.recordare.musicxml', 'mxl'],
+    ['application/vnd.recordare.musicxml+xml', 'musicxml'],
+    ['application/vnd.rig.cryptonote', 'cryptonote'],
+    ['application/vnd.rim.cod', 'cod'],
+    ['application/vnd.rn-realmedia', 'rm'],
+    ['application/vnd.rn-realplayer', 'rnx'],
+    ['application/vnd.route66.link66+xml', 'link66'],
+    ['application/vnd.sailingtracker.track', 'st'],
+    ['application/vnd.seemail', 'see'],
+    ['application/vnd.sema', 'sema'],
+    ['application/vnd.semd', 'semd'],
+    ['application/vnd.semf', 'semf'],
+    ['application/vnd.shana.informed.formdata', 'ifm'],
+    ['application/vnd.shana.informed.formtemplate', 'itp'],
+    ['application/vnd.shana.informed.interchange', 'iif'],
+    ['application/vnd.shana.informed.package', 'ipk'],
+    ['application/vnd.simtech-mindmapper', 'twd'],
+    ['application/vnd.smaf', 'mmf'],
+    ['application/vnd.smart.teacher', 'teacher'],
+    ['application/vnd.solent.sdkm+xml', 'sdkm'],
+    ['application/vnd.spotfire.dxp', 'dxp'],
+    ['application/vnd.spotfire.sfs', 'sfs'],
+    ['application/vnd.stardivision.calc', 'sdc'],
+    ['application/vnd.stardivision.draw', 'sda'],
+    ['application/vnd.stardivision.impress', 'sdd'],
+    ['application/vnd.stardivision.math', 'smf'],
+    ['application/vnd.stardivision.writer', 'sdw'],
+    ['application/vnd.stardivision.writer-global', 'sgl'],
+    ['application/vnd.stepmania.stepchart', 'sm'],
+    ['application/vnd.sun.xml.calc', 'sxc'],
+    ['application/vnd.sun.xml.calc.template', 'stc'],
+    ['application/vnd.sun.xml.draw', 'sxd'],
+    ['application/vnd.sun.xml.draw.template', 'std'],
+    ['application/vnd.sun.xml.impress', 'sxi'],
+    ['application/vnd.sun.xml.impress.template', 'sti'],
+    ['application/vnd.sun.xml.math', 'sxm'],
+    ['application/vnd.sun.xml.writer', 'sxw'],
+    ['application/vnd.sun.xml.writer.global', 'sxg'],
+    ['application/vnd.sun.xml.writer.template', 'stw'],
+    ['application/vnd.sus-calendar', 'sus'],
+    ['application/vnd.svd', 'svd'],
+    ['application/vnd.symbian.install', 'sis'],
+    ['application/vnd.syncml+xml', 'xsm'],
+    ['application/vnd.syncml.dm+wbxml', 'bdm'],
+    ['application/vnd.syncml.dm+xml', 'xdm'],
+    ['application/vnd.tao.intent-module-archive', 'tao'],
+    ['application/vnd.tmobile-livetv', 'tmo'],
+    ['application/vnd.trid.tpt', 'tpt'],
+    ['application/vnd.triscape.mxs', 'mxs'],
+    ['application/vnd.trueapp', 'tra'],
+    ['application/vnd.ufdl', 'ufd'],
+    ['application/vnd.uiq.theme', 'utz'],
+    ['application/vnd.umajin', 'umj'],
+    ['application/vnd.unity', 'unityweb'],
+    ['application/vnd.uoml+xml', 'uoml'],
+    ['application/vnd.vcx', 'vcx'],
+    ['application/vnd.visio', 'vsd'],
+    ['application/vnd.visionary', 'vis'],
+    ['application/vnd.vsf', 'vsf'],
+    ['application/vnd.wap.wbxml', 'wbxml'],
+    ['application/vnd.wap.wmlc', 'wmlc'],
+    ['application/vnd.wap.wmlscriptc', 'wmlsc'],
+    ['application/vnd.webturbo', 'wtb'],
+    ['application/vnd.wolfram.player', 'nbp'],
+    ['application/vnd.wordperfect', 'wpd'],
+    ['application/vnd.wqd', 'wqd'],
+    ['application/vnd.wt.stf', 'stf'],
+    ['application/vnd.xara', ['web', 'xar']],
+    ['application/vnd.xfdl', 'xfdl'],
+    ['application/vnd.yamaha.hv-dic', 'hvd'],
+    ['application/vnd.yamaha.hv-script', 'hvs'],
+    ['application/vnd.yamaha.hv-voice', 'hvp'],
+    ['application/vnd.yamaha.openscoreformat', 'osf'],
+    ['application/vnd.yamaha.openscoreformat.osfpvg+xml', 'osfpvg'],
+    ['application/vnd.yamaha.smaf-audio', 'saf'],
+    ['application/vnd.yamaha.smaf-phrase', 'spf'],
+    ['application/vnd.yellowriver-custom-menu', 'cmp'],
+    ['application/vnd.zul', 'zir'],
+    ['application/vnd.zzazz.deck+xml', 'zaz'],
+    ['application/vocaltec-media-desc', 'vmd'],
+    ['application/vocaltec-media-file', 'vmf'],
+    ['application/voicexml+xml', 'vxml'],
+    ['application/widget', 'wgt'],
+    ['application/winhlp', 'hlp'],
+    ['application/wordperfect', ['wp', 'wp5', 'wp6', 'wpd']],
+    ['application/wordperfect6.0', ['w60', 'wp5']],
+    ['application/wordperfect6.1', 'w61'],
+    ['application/wsdl+xml', 'wsdl'],
+    ['application/wspolicy+xml', 'wspolicy'],
+    ['application/x-123', 'wk1'],
+    ['application/x-7z-compressed', '7z'],
+    ['application/x-abiword', 'abw'],
+    ['application/x-ace-compressed', 'ace'],
+    ['application/x-aim', 'aim'],
+    ['application/x-authorware-bin', 'aab'],
+    ['application/x-authorware-map', 'aam'],
+    ['application/x-authorware-seg', 'aas'],
+    ['application/x-bcpio', 'bcpio'],
+    ['application/x-binary', 'bin'],
+    ['application/x-binhex40', 'hqx'],
+    ['application/x-bittorrent', 'torrent'],
+    ['application/x-bsh', ['bsh', 'sh', 'shar']],
+    ['application/x-bytecode.elisp', 'elc'],
+    ['applicaiton/x-bytecode.python', 'pyc'],
+    ['application/x-bzip', 'bz'],
+    ['application/x-bzip2', ['boz', 'bz2']],
+    ['application/x-cdf', 'cdf'],
+    ['application/x-cdlink', 'vcd'],
+    ['application/x-chat', ['cha', 'chat']],
+    ['application/x-chess-pgn', 'pgn'],
+    ['application/x-cmu-raster', 'ras'],
+    ['application/x-cocoa', 'cco'],
+    ['application/x-compactpro', 'cpt'],
+    ['application/x-compress', 'z'],
+    ['application/x-compressed', ['tgz', 'gz', 'z', 'zip']],
+    ['application/x-conference', 'nsc'],
+    ['application/x-cpio', 'cpio'],
+    ['application/x-cpt', 'cpt'],
+    ['application/x-csh', 'csh'],
+    ['application/x-debian-package', 'deb'],
+    ['application/x-deepv', 'deepv'],
+    ['application/x-director', ['dir', 'dcr', 'dxr']],
+    ['application/x-doom', 'wad'],
+    ['application/x-dtbncx+xml', 'ncx'],
+    ['application/x-dtbook+xml', 'dtb'],
+    ['application/x-dtbresource+xml', 'res'],
+    ['application/x-dvi', 'dvi'],
+    ['application/x-elc', 'elc'],
+    ['application/x-envoy', ['env', 'evy']],
+    ['application/x-esrehber', 'es'],
+    ['application/x-excel', ['xls', 'xla', 'xlb', 'xlc', 'xld', 'xlk', 'xll', 'xlm', 'xlt', 'xlv', 'xlw']],
+    ['application/x-font-bdf', 'bdf'],
+    ['application/x-font-ghostscript', 'gsf'],
+    ['application/x-font-linux-psf', 'psf'],
+    ['application/x-font-otf', 'otf'],
+    ['application/x-font-pcf', 'pcf'],
+    ['application/x-font-snf', 'snf'],
+    ['application/x-font-ttf', 'ttf'],
+    ['application/x-font-type1', 'pfa'],
+    ['application/x-font-woff', 'woff'],
+    ['application/x-frame', 'mif'],
+    ['application/x-freelance', 'pre'],
+    ['application/x-futuresplash', 'spl'],
+    ['application/x-gnumeric', 'gnumeric'],
+    ['application/x-gsp', 'gsp'],
+    ['application/x-gss', 'gss'],
+    ['application/x-gtar', 'gtar'],
+    ['application/x-gzip', ['gz', 'gzip']],
+    ['application/x-hdf', 'hdf'],
+    ['application/x-helpfile', ['help', 'hlp']],
+    ['application/x-httpd-imap', 'imap'],
+    ['application/x-ima', 'ima'],
+    ['application/x-internet-signup', ['ins', 'isp']],
+    ['application/x-internett-signup', 'ins'],
+    ['application/x-inventor', 'iv'],
+    ['application/x-ip2', 'ip'],
+    ['application/x-iphone', 'iii'],
+    ['application/x-java-class', 'class'],
+    ['application/x-java-commerce', 'jcm'],
+    ['application/x-java-jnlp-file', 'jnlp'],
+    ['application/x-javascript', 'js'],
+    ['application/x-koan', ['skd', 'skm', 'skp', 'skt']],
+    ['application/x-ksh', 'ksh'],
+    ['application/x-latex', ['latex', 'ltx']],
+    ['application/x-lha', 'lha'],
+    ['application/x-lisp', 'lsp'],
+    ['application/x-livescreen', 'ivy'],
+    ['application/x-lotus', 'wq1'],
+    ['application/x-lotusscreencam', 'scm'],
+    ['application/x-lzh', 'lzh'],
+    ['application/x-lzx', 'lzx'],
+    ['application/x-mac-binhex40', 'hqx'],
+    ['application/x-macbinary', 'bin'],
+    ['application/x-magic-cap-package-1.0', 'mc$'],
+    ['application/x-mathcad', 'mcd'],
+    ['application/x-meme', 'mm'],
+    ['application/x-midi', ['mid', 'midi']],
+    ['application/x-mif', 'mif'],
+    ['application/x-mix-transfer', 'nix'],
+    ['application/x-mobipocket-ebook', 'prc'],
+    ['application/x-mplayer2', 'asx'],
+    ['application/x-ms-application', 'application'],
+    ['application/x-ms-wmd', 'wmd'],
+    ['application/x-ms-wmz', 'wmz'],
+    ['application/x-ms-xbap', 'xbap'],
+    ['application/x-msaccess', 'mdb'],
+    ['application/x-msbinder', 'obd'],
+    ['application/x-mscardfile', 'crd'],
+    ['application/x-msclip', 'clp'],
+    ['application/x-msdownload', ['exe', 'dll']],
+    ['application/x-msexcel', ['xls', 'xla', 'xlw']],
+    ['application/x-msmediaview', ['mvb', 'm13', 'm14']],
+    ['application/x-msmetafile', 'wmf'],
+    ['application/x-msmoney', 'mny'],
+    ['application/x-mspowerpoint', 'ppt'],
+    ['application/x-mspublisher', 'pub'],
+    ['application/x-msschedule', 'scd'],
+    ['application/x-msterminal', 'trm'],
+    ['application/x-mswrite', 'wri'],
+    ['application/x-navi-animation', 'ani'],
+    ['application/x-navidoc', 'nvd'],
+    ['application/x-navimap', 'map'],
+    ['application/x-navistyle', 'stl'],
+    ['application/x-netcdf', ['cdf', 'nc']],
+    ['application/x-newton-compatible-pkg', 'pkg'],
+    ['application/x-nokia-9000-communicator-add-on-software', 'aos'],
+    ['application/x-omc', 'omc'],
+    ['application/x-omcdatamaker', 'omcd'],
+    ['application/x-omcregerator', 'omcr'],
+    ['application/x-pagemaker', ['pm4', 'pm5']],
+    ['application/x-pcl', 'pcl'],
+    ['application/x-perfmon', ['pma', 'pmc', 'pml', 'pmr', 'pmw']],
+    ['application/x-pixclscript', 'plx'],
+    ['application/x-pkcs10', 'p10'],
+    ['application/x-pkcs12', ['p12', 'pfx']],
+    ['application/x-pkcs7-certificates', ['p7b', 'spc']],
+    ['application/x-pkcs7-certreqresp', 'p7r'],
+    ['application/x-pkcs7-mime', ['p7m', 'p7c']],
+    ['application/x-pkcs7-signature', ['p7s', 'p7a']],
+    ['application/x-pointplus', 'css'],
+    ['application/x-portable-anymap', 'pnm'],
+    ['application/x-project', ['mpc', 'mpt', 'mpv', 'mpx']],
+    ['application/x-qpro', 'wb1'],
+    ['application/x-rar-compressed', 'rar'],
+    ['application/x-rtf', 'rtf'],
+    ['application/x-sdp', 'sdp'],
+    ['application/x-sea', 'sea'],
+    ['application/x-seelogo', 'sl'],
+    ['application/x-sh', 'sh'],
+    ['application/x-shar', ['shar', 'sh']],
+    ['application/x-shockwave-flash', 'swf'],
+    ['application/x-silverlight-app', 'xap'],
+    ['application/x-sit', 'sit'],
+    ['application/x-sprite', ['spr', 'sprite']],
+    ['application/x-stuffit', 'sit'],
+    ['application/x-stuffitx', 'sitx'],
+    ['application/x-sv4cpio', 'sv4cpio'],
+    ['application/x-sv4crc', 'sv4crc'],
+    ['application/x-tar', 'tar'],
+    ['application/x-tbook', ['sbk', 'tbk']],
+    ['application/x-tcl', 'tcl'],
+    ['application/x-tex', 'tex'],
+    ['application/x-tex-tfm', 'tfm'],
+    ['application/x-texinfo', ['texi', 'texinfo']],
+    ['application/x-troff', ['roff', 't', 'tr']],
+    ['application/x-troff-man', 'man'],
+    ['application/x-troff-me', 'me'],
+    ['application/x-troff-ms', 'ms'],
+    ['application/x-troff-msvideo', 'avi'],
+    ['application/x-ustar', 'ustar'],
+    ['application/x-visio', ['vsd', 'vst', 'vsw']],
+    ['application/x-vnd.audioexplosion.mzz', 'mzz'],
+    ['application/x-vnd.ls-xpix', 'xpix'],
+    ['application/x-vrml', 'vrml'],
+    ['application/x-wais-source', ['src', 'wsrc']],
+    ['application/x-winhelp', 'hlp'],
+    ['application/x-wintalk', 'wtk'],
+    ['application/x-world', ['wrl', 'svr']],
+    ['application/x-wpwin', 'wpd'],
+    ['application/x-wri', 'wri'],
+    ['application/x-x509-ca-cert', ['cer', 'crt', 'der']],
+    ['application/x-x509-user-cert', 'crt'],
+    ['application/x-xfig', 'fig'],
+    ['application/x-xpinstall', 'xpi'],
+    ['application/x-zip-compressed', 'zip'],
+    ['application/xcap-diff+xml', 'xdf'],
+    ['application/xenc+xml', 'xenc'],
+    ['application/xhtml+xml', 'xhtml'],
+    ['application/xml', 'xml'],
+    ['application/xml-dtd', 'dtd'],
+    ['application/xop+xml', 'xop'],
+    ['application/xslt+xml', 'xslt'],
+    ['application/xspf+xml', 'xspf'],
+    ['application/xv+xml', 'mxml'],
+    ['application/yang', 'yang'],
+    ['application/yin+xml', 'yin'],
+    ['application/ynd.ms-pkipko', 'pko'],
+    ['application/zip', 'zip'],
+    ['audio/adpcm', 'adp'],
+    ['audio/aiff', ['aiff', 'aif', 'aifc']],
+    ['audio/basic', ['snd', 'au']],
+    ['audio/it', 'it'],
+    ['audio/make', ['funk', 'my', 'pfunk']],
+    ['audio/make.my.funk', 'pfunk'],
+    ['audio/mid', ['mid', 'rmi']],
+    ['audio/midi', ['midi', 'kar', 'mid']],
+    ['audio/mod', 'mod'],
+    ['audio/mp4', 'mp4a'],
+    ['audio/mpeg', ['mpga', 'mp3', 'm2a', 'mp2', 'mpa', 'mpg']],
+    ['audio/mpeg3', 'mp3'],
+    ['audio/nspaudio', ['la', 'lma']],
+    ['audio/ogg', 'oga'],
+    ['audio/s3m', 's3m'],
+    ['audio/tsp-audio', 'tsi'],
+    ['audio/tsplayer', 'tsp'],
+    ['audio/vnd.dece.audio', 'uva'],
+    ['audio/vnd.digital-winds', 'eol'],
+    ['audio/vnd.dra', 'dra'],
+    ['audio/vnd.dts', 'dts'],
+    ['audio/vnd.dts.hd', 'dtshd'],
+    ['audio/vnd.lucent.voice', 'lvp'],
+    ['audio/vnd.ms-playready.media.pya', 'pya'],
+    ['audio/vnd.nuera.ecelp4800', 'ecelp4800'],
+    ['audio/vnd.nuera.ecelp7470', 'ecelp7470'],
+    ['audio/vnd.nuera.ecelp9600', 'ecelp9600'],
+    ['audio/vnd.qcelp', 'qcp'],
+    ['audio/vnd.rip', 'rip'],
+    ['audio/voc', 'voc'],
+    ['audio/voxware', 'vox'],
+    ['audio/wav', 'wav'],
+    ['audio/webm', 'weba'],
+    ['audio/x-aac', 'aac'],
+    ['audio/x-adpcm', 'snd'],
+    ['audio/x-aiff', ['aiff', 'aif', 'aifc']],
+    ['audio/x-au', 'au'],
+    ['audio/x-gsm', ['gsd', 'gsm']],
+    ['audio/x-jam', 'jam'],
+    ['audio/x-liveaudio', 'lam'],
+    ['audio/x-mid', ['mid', 'midi']],
+    ['audio/x-midi', ['midi', 'mid']],
+    ['audio/x-mod', 'mod'],
+    ['audio/x-mpeg', 'mp2'],
+    ['audio/x-mpeg-3', 'mp3'],
+    ['audio/x-mpegurl', 'm3u'],
+    ['audio/x-mpequrl', 'm3u'],
+    ['audio/x-ms-wax', 'wax'],
+    ['audio/x-ms-wma', 'wma'],
+    ['audio/x-nspaudio', ['la', 'lma']],
+    ['audio/x-pn-realaudio', ['ra', 'ram', 'rm', 'rmm', 'rmp']],
+    ['audio/x-pn-realaudio-plugin', ['ra', 'rmp', 'rpm']],
+    ['audio/x-psid', 'sid'],
+    ['audio/x-realaudio', 'ra'],
+    ['audio/x-twinvq', 'vqf'],
+    ['audio/x-twinvq-plugin', ['vqe', 'vql']],
+    ['audio/x-vnd.audioexplosion.mjuicemediafile', 'mjf'],
+    ['audio/x-voc', 'voc'],
+    ['audio/x-wav', 'wav'],
+    ['audio/xm', 'xm'],
+    ['chemical/x-cdx', 'cdx'],
+    ['chemical/x-cif', 'cif'],
+    ['chemical/x-cmdf', 'cmdf'],
+    ['chemical/x-cml', 'cml'],
+    ['chemical/x-csml', 'csml'],
+    ['chemical/x-pdb', ['pdb', 'xyz']],
+    ['chemical/x-xyz', 'xyz'],
+    ['drawing/x-dwf', 'dwf'],
+    ['i-world/i-vrml', 'ivr'],
+    ['image/bmp', ['bmp', 'bm']],
+    ['image/cgm', 'cgm'],
+    ['image/cis-cod', 'cod'],
+    ['image/cmu-raster', ['ras', 'rast']],
+    ['image/fif', 'fif'],
+    ['image/florian', ['flo', 'turbot']],
+    ['image/g3fax', 'g3'],
+    ['image/gif', 'gif'],
+    ['image/ief', ['ief', 'iefs']],
+    ['image/jpeg', ['jpeg', 'jpe', 'jpg', 'jfif', 'jfif-tbnl']],
+    ['image/jutvision', 'jut'],
+    ['image/ktx', 'ktx'],
+    ['image/naplps', ['nap', 'naplps']],
+    ['image/pict', ['pic', 'pict']],
+    ['image/pipeg', 'jfif'],
+    ['image/pjpeg', ['jfif', 'jpe', 'jpeg', 'jpg']],
+    ['image/png', ['png', 'x-png']],
+    ['image/prs.btif', 'btif'],
+    ['image/svg+xml', 'svg'],
+    ['image/tiff', ['tif', 'tiff']],
+    ['image/vasa', 'mcf'],
+    ['image/vnd.adobe.photoshop', 'psd'],
+    ['image/vnd.dece.graphic', 'uvi'],
+    ['image/vnd.djvu', 'djvu'],
+    ['image/vnd.dvb.subtitle', 'sub'],
+    ['image/vnd.dwg', ['dwg', 'dxf', 'svf']],
+    ['image/vnd.dxf', 'dxf'],
+    ['image/vnd.fastbidsheet', 'fbs'],
+    ['image/vnd.fpx', 'fpx'],
+    ['image/vnd.fst', 'fst'],
+    ['image/vnd.fujixerox.edmics-mmr', 'mmr'],
+    ['image/vnd.fujixerox.edmics-rlc', 'rlc'],
+    ['image/vnd.ms-modi', 'mdi'],
+    ['image/vnd.net-fpx', ['fpx', 'npx']],
+    ['image/vnd.rn-realflash', 'rf'],
+    ['image/vnd.rn-realpix', 'rp'],
+    ['image/vnd.wap.wbmp', 'wbmp'],
+    ['image/vnd.xiff', 'xif'],
+    ['image/webp', 'webp'],
+    ['image/x-cmu-raster', 'ras'],
+    ['image/x-cmx', 'cmx'],
+    ['image/x-dwg', ['dwg', 'dxf', 'svf']],
+    ['image/x-freehand', 'fh'],
+    ['image/x-icon', 'ico'],
+    ['image/x-jg', 'art'],
+    ['image/x-jps', 'jps'],
+    ['image/x-niff', ['niff', 'nif']],
+    ['image/x-pcx', 'pcx'],
+    ['image/x-pict', ['pct', 'pic']],
+    ['image/x-portable-anymap', 'pnm'],
+    ['image/x-portable-bitmap', 'pbm'],
+    ['image/x-portable-graymap', 'pgm'],
+    ['image/x-portable-greymap', 'pgm'],
+    ['image/x-portable-pixmap', 'ppm'],
+    ['image/x-quicktime', ['qif', 'qti', 'qtif']],
+    ['image/x-rgb', 'rgb'],
+    ['image/x-tiff', ['tif', 'tiff']],
+    ['image/x-windows-bmp', 'bmp'],
+    ['image/x-xbitmap', 'xbm'],
+    ['image/x-xbm', 'xbm'],
+    ['image/x-xpixmap', ['xpm', 'pm']],
+    ['image/x-xwd', 'xwd'],
+    ['image/x-xwindowdump', 'xwd'],
+    ['image/xbm', 'xbm'],
+    ['image/xpm', 'xpm'],
+    ['message/rfc822', ['eml', 'mht', 'mhtml', 'nws', 'mime']],
+    ['model/iges', ['iges', 'igs']],
+    ['model/mesh', 'msh'],
+    ['model/vnd.collada+xml', 'dae'],
+    ['model/vnd.dwf', 'dwf'],
+    ['model/vnd.gdl', 'gdl'],
+    ['model/vnd.gtw', 'gtw'],
+    ['model/vnd.mts', 'mts'],
+    ['model/vnd.vtu', 'vtu'],
+    ['model/vrml', ['vrml', 'wrl', 'wrz']],
+    ['model/x-pov', 'pov'],
+    ['multipart/x-gzip', 'gzip'],
+    ['multipart/x-ustar', 'ustar'],
+    ['multipart/x-zip', 'zip'],
+    ['music/crescendo', ['mid', 'midi']],
+    ['music/x-karaoke', 'kar'],
+    ['paleovu/x-pv', 'pvu'],
+    ['text/asp', 'asp'],
+    ['text/calendar', 'ics'],
+    ['text/css', 'css'],
+    ['text/csv', 'csv'],
+    ['text/ecmascript', 'js'],
+    ['text/h323', '323'],
+    ['text/html', ['html', 'htm', 'stm', 'acgi', 'htmls', 'htx', 'shtml']],
+    ['text/iuls', 'uls'],
+    ['text/javascript', 'js'],
+    ['text/mcf', 'mcf'],
+    ['text/n3', 'n3'],
+    ['text/pascal', 'pas'],
+    [
+        'text/plain',
+        [
+            'txt',
+            'bas',
+            'c',
+            'h',
+            'c++',
+            'cc',
+            'com',
+            'conf',
+            'cxx',
+            'def',
+            'f',
+            'f90',
+            'for',
+            'g',
+            'hh',
+            'idc',
+            'jav',
+            'java',
+            'list',
+            'log',
+            'lst',
+            'm',
+            'mar',
+            'pl',
+            'sdml',
+            'text'
+        ]
+    ],
+    ['text/plain-bas', 'par'],
+    ['text/prs.lines.tag', 'dsc'],
+    ['text/richtext', ['rtx', 'rt', 'rtf']],
+    ['text/scriplet', 'wsc'],
+    ['text/scriptlet', 'sct'],
+    ['text/sgml', ['sgm', 'sgml']],
+    ['text/tab-separated-values', 'tsv'],
+    ['text/troff', 't'],
+    ['text/turtle', 'ttl'],
+    ['text/uri-list', ['uni', 'unis', 'uri', 'uris']],
+    ['text/vnd.abc', 'abc'],
+    ['text/vnd.curl', 'curl'],
+    ['text/vnd.curl.dcurl', 'dcurl'],
+    ['text/vnd.curl.mcurl', 'mcurl'],
+    ['text/vnd.curl.scurl', 'scurl'],
+    ['text/vnd.fly', 'fly'],
+    ['text/vnd.fmi.flexstor', 'flx'],
+    ['text/vnd.graphviz', 'gv'],
+    ['text/vnd.in3d.3dml', '3dml'],
+    ['text/vnd.in3d.spot', 'spot'],
+    ['text/vnd.rn-realtext', 'rt'],
+    ['text/vnd.sun.j2me.app-descriptor', 'jad'],
+    ['text/vnd.wap.wml', 'wml'],
+    ['text/vnd.wap.wmlscript', 'wmls'],
+    ['text/webviewhtml', 'htt'],
+    ['text/x-asm', ['asm', 's']],
+    ['text/x-audiosoft-intra', 'aip'],
+    ['text/x-c', ['c', 'cc', 'cpp']],
+    ['text/x-component', 'htc'],
+    ['text/x-fortran', ['for', 'f', 'f77', 'f90']],
+    ['text/x-h', ['h', 'hh']],
+    ['text/x-java-source', ['java', 'jav']],
+    ['text/x-java-source,java', 'java'],
+    ['text/x-la-asf', 'lsx'],
+    ['text/x-m', 'm'],
+    ['text/x-pascal', 'p'],
+    ['text/x-script', 'hlb'],
+    ['text/x-script.csh', 'csh'],
+    ['text/x-script.elisp', 'el'],
+    ['text/x-script.guile', 'scm'],
+    ['text/x-script.ksh', 'ksh'],
+    ['text/x-script.lisp', 'lsp'],
+    ['text/x-script.perl', 'pl'],
+    ['text/x-script.perl-module', 'pm'],
+    ['text/x-script.phyton', 'py'],
+    ['text/x-script.rexx', 'rexx'],
+    ['text/x-script.scheme', 'scm'],
+    ['text/x-script.sh', 'sh'],
+    ['text/x-script.tcl', 'tcl'],
+    ['text/x-script.tcsh', 'tcsh'],
+    ['text/x-script.zsh', 'zsh'],
+    ['text/x-server-parsed-html', ['shtml', 'ssi']],
+    ['text/x-setext', 'etx'],
+    ['text/x-sgml', ['sgm', 'sgml']],
+    ['text/x-speech', ['spc', 'talk']],
+    ['text/x-uil', 'uil'],
+    ['text/x-uuencode', ['uu', 'uue']],
+    ['text/x-vcalendar', 'vcs'],
+    ['text/x-vcard', 'vcf'],
+    ['text/xml', 'xml'],
+    ['video/3gpp', '3gp'],
+    ['video/3gpp2', '3g2'],
+    ['video/animaflex', 'afl'],
+    ['video/avi', 'avi'],
+    ['video/avs-video', 'avs'],
+    ['video/dl', 'dl'],
+    ['video/fli', 'fli'],
+    ['video/gl', 'gl'],
+    ['video/h261', 'h261'],
+    ['video/h263', 'h263'],
+    ['video/h264', 'h264'],
+    ['video/jpeg', 'jpgv'],
+    ['video/jpm', 'jpm'],
+    ['video/mj2', 'mj2'],
+    ['video/mp4', 'mp4'],
+    ['video/mpeg', ['mpeg', 'mp2', 'mpa', 'mpe', 'mpg', 'mpv2', 'm1v', 'm2v', 'mp3']],
+    ['video/msvideo', 'avi'],
+    ['video/ogg', 'ogv'],
+    ['video/quicktime', ['mov', 'qt', 'moov']],
+    ['video/vdo', 'vdo'],
+    ['video/vivo', ['viv', 'vivo']],
+    ['video/vnd.dece.hd', 'uvh'],
+    ['video/vnd.dece.mobile', 'uvm'],
+    ['video/vnd.dece.pd', 'uvp'],
+    ['video/vnd.dece.sd', 'uvs'],
+    ['video/vnd.dece.video', 'uvv'],
+    ['video/vnd.fvt', 'fvt'],
+    ['video/vnd.mpegurl', 'mxu'],
+    ['video/vnd.ms-playready.media.pyv', 'pyv'],
+    ['video/vnd.rn-realvideo', 'rv'],
+    ['video/vnd.uvvu.mp4', 'uvu'],
+    ['video/vnd.vivo', ['viv', 'vivo']],
+    ['video/vosaic', 'vos'],
+    ['video/webm', 'webm'],
+    ['video/x-amt-demorun', 'xdr'],
+    ['video/x-amt-showrun', 'xsr'],
+    ['video/x-atomic3d-feature', 'fmf'],
+    ['video/x-dl', 'dl'],
+    ['video/x-dv', ['dif', 'dv']],
+    ['video/x-f4v', 'f4v'],
+    ['video/x-fli', 'fli'],
+    ['video/x-flv', 'flv'],
+    ['video/x-gl', 'gl'],
+    ['video/x-isvideo', 'isu'],
+    ['video/x-la-asf', ['lsf', 'lsx']],
+    ['video/x-m4v', 'm4v'],
+    ['video/x-motion-jpeg', 'mjpg'],
+    ['video/x-mpeg', ['mp3', 'mp2']],
+    ['video/x-mpeq2a', 'mp2'],
+    ['video/x-ms-asf', ['asf', 'asr', 'asx']],
+    ['video/x-ms-asf-plugin', 'asx'],
+    ['video/x-ms-wm', 'wm'],
+    ['video/x-ms-wmv', 'wmv'],
+    ['video/x-ms-wmx', 'wmx'],
+    ['video/x-ms-wvx', 'wvx'],
+    ['video/x-msvideo', 'avi'],
+    ['video/x-qtc', 'qtc'],
+    ['video/x-scm', 'scm'],
+    ['video/x-sgi-movie', ['movie', 'mv']],
+    ['windows/metafile', 'wmf'],
+    ['www/mime', 'mime'],
+    ['x-conference/x-cooltalk', 'ice'],
+    ['x-music/x-midi', ['mid', 'midi']],
+    ['x-world/x-3dmf', ['3dm', '3dmf', 'qd3', 'qd3d']],
+    ['x-world/x-svr', 'svr'],
+    ['x-world/x-vrml', ['flr', 'vrml', 'wrl', 'wrz', 'xaf', 'xof']],
+    ['x-world/x-vrt', 'vrt'],
+    ['xgl/drawing', 'xgz'],
+    ['xgl/movie', 'xmz']
+]);
+const extensions = new Map([
+    ['123', 'application/vnd.lotus-1-2-3'],
+    ['323', 'text/h323'],
+    ['*', 'application/octet-stream'],
+    ['3dm', 'x-world/x-3dmf'],
+    ['3dmf', 'x-world/x-3dmf'],
+    ['3dml', 'text/vnd.in3d.3dml'],
+    ['3g2', 'video/3gpp2'],
+    ['3gp', 'video/3gpp'],
+    ['7z', 'application/x-7z-compressed'],
+    ['a', 'application/octet-stream'],
+    ['aab', 'application/x-authorware-bin'],
+    ['aac', 'audio/x-aac'],
+    ['aam', 'application/x-authorware-map'],
+    ['aas', 'application/x-authorware-seg'],
+    ['abc', 'text/vnd.abc'],
+    ['abw', 'application/x-abiword'],
+    ['ac', 'application/pkix-attr-cert'],
+    ['acc', 'application/vnd.americandynamics.acc'],
+    ['ace', 'application/x-ace-compressed'],
+    ['acgi', 'text/html'],
+    ['acu', 'application/vnd.acucobol'],
+    ['acx', 'application/internet-property-stream'],
+    ['adp', 'audio/adpcm'],
+    ['aep', 'application/vnd.audiograph'],
+    ['afl', 'video/animaflex'],
+    ['afp', 'application/vnd.ibm.modcap'],
+    ['ahead', 'application/vnd.ahead.space'],
+    ['ai', 'application/postscript'],
+    ['aif', ['audio/aiff', 'audio/x-aiff']],
+    ['aifc', ['audio/aiff', 'audio/x-aiff']],
+    ['aiff', ['audio/aiff', 'audio/x-aiff']],
+    ['aim', 'application/x-aim'],
+    ['aip', 'text/x-audiosoft-intra'],
+    ['air', 'application/vnd.adobe.air-application-installer-package+zip'],
+    ['ait', 'application/vnd.dvb.ait'],
+    ['ami', 'application/vnd.amiga.ami'],
+    ['ani', 'application/x-navi-animation'],
+    ['aos', 'application/x-nokia-9000-communicator-add-on-software'],
+    ['apk', 'application/vnd.android.package-archive'],
+    ['application', 'application/x-ms-application'],
+    ['apr', 'application/vnd.lotus-approach'],
+    ['aps', 'application/mime'],
+    ['arc', 'application/octet-stream'],
+    ['arj', ['application/arj', 'application/octet-stream']],
+    ['art', 'image/x-jg'],
+    ['asf', 'video/x-ms-asf'],
+    ['asm', 'text/x-asm'],
+    ['aso', 'application/vnd.accpac.simply.aso'],
+    ['asp', 'text/asp'],
+    ['asr', 'video/x-ms-asf'],
+    ['asx', ['video/x-ms-asf', 'application/x-mplayer2', 'video/x-ms-asf-plugin']],
+    ['atc', 'application/vnd.acucorp'],
+    ['atomcat', 'application/atomcat+xml'],
+    ['atomsvc', 'application/atomsvc+xml'],
+    ['atx', 'application/vnd.antix.game-component'],
+    ['au', ['audio/basic', 'audio/x-au']],
+    ['avi', ['video/avi', 'video/msvideo', 'application/x-troff-msvideo', 'video/x-msvideo']],
+    ['avs', 'video/avs-video'],
+    ['aw', 'application/applixware'],
+    ['axs', 'application/olescript'],
+    ['azf', 'application/vnd.airzip.filesecure.azf'],
+    ['azs', 'application/vnd.airzip.filesecure.azs'],
+    ['azw', 'application/vnd.amazon.ebook'],
+    ['bas', 'text/plain'],
+    ['bcpio', 'application/x-bcpio'],
+    ['bdf', 'application/x-font-bdf'],
+    ['bdm', 'application/vnd.syncml.dm+wbxml'],
+    ['bed', 'application/vnd.realvnc.bed'],
+    ['bh2', 'application/vnd.fujitsu.oasysprs'],
+    ['bin', ['application/octet-stream', 'application/mac-binary', 'application/macbinary', 'application/x-macbinary', 'application/x-binary']],
+    ['bm', 'image/bmp'],
+    ['bmi', 'application/vnd.bmi'],
+    ['bmp', ['image/bmp', 'image/x-windows-bmp']],
+    ['boo', 'application/book'],
+    ['book', 'application/book'],
+    ['box', 'application/vnd.previewsystems.box'],
+    ['boz', 'application/x-bzip2'],
+    ['bsh', 'application/x-bsh'],
+    ['btif', 'image/prs.btif'],
+    ['bz', 'application/x-bzip'],
+    ['bz2', 'application/x-bzip2'],
+    ['c', ['text/plain', 'text/x-c']],
+    ['c++', 'text/plain'],
+    ['c11amc', 'application/vnd.cluetrust.cartomobile-config'],
+    ['c11amz', 'application/vnd.cluetrust.cartomobile-config-pkg'],
+    ['c4g', 'application/vnd.clonk.c4group'],
+    ['cab', 'application/vnd.ms-cab-compressed'],
+    ['car', 'application/vnd.curl.car'],
+    ['cat', ['application/vnd.ms-pkiseccat', 'application/vnd.ms-pki.seccat']],
+    ['cc', ['text/plain', 'text/x-c']],
+    ['ccad', 'application/clariscad'],
+    ['cco', 'application/x-cocoa'],
+    ['ccxml', 'application/ccxml+xml,'],
+    ['cdbcmsg', 'application/vnd.contact.cmsg'],
+    ['cdf', ['application/cdf', 'application/x-cdf', 'application/x-netcdf']],
+    ['cdkey', 'application/vnd.mediastation.cdkey'],
+    ['cdmia', 'application/cdmi-capability'],
+    ['cdmic', 'application/cdmi-container'],
+    ['cdmid', 'application/cdmi-domain'],
+    ['cdmio', 'application/cdmi-object'],
+    ['cdmiq', 'application/cdmi-queue'],
+    ['cdx', 'chemical/x-cdx'],
+    ['cdxml', 'application/vnd.chemdraw+xml'],
+    ['cdy', 'application/vnd.cinderella'],
+    ['cer', ['application/pkix-cert', 'application/x-x509-ca-cert']],
+    ['cgm', 'image/cgm'],
+    ['cha', 'application/x-chat'],
+    ['chat', 'application/x-chat'],
+    ['chm', 'application/vnd.ms-htmlhelp'],
+    ['chrt', 'application/vnd.kde.kchart'],
+    ['cif', 'chemical/x-cif'],
+    ['cii', 'application/vnd.anser-web-certificate-issue-initiation'],
+    ['cil', 'application/vnd.ms-artgalry'],
+    ['cla', 'application/vnd.claymore'],
+    ['class', ['application/octet-stream', 'application/java', 'application/java-byte-code', 'application/java-vm', 'application/x-java-class']],
+    ['clkk', 'application/vnd.crick.clicker.keyboard'],
+    ['clkp', 'application/vnd.crick.clicker.palette'],
+    ['clkt', 'application/vnd.crick.clicker.template'],
+    ['clkw', 'application/vnd.crick.clicker.wordbank'],
+    ['clkx', 'application/vnd.crick.clicker'],
+    ['clp', 'application/x-msclip'],
+    ['cmc', 'application/vnd.cosmocaller'],
+    ['cmdf', 'chemical/x-cmdf'],
+    ['cml', 'chemical/x-cml'],
+    ['cmp', 'application/vnd.yellowriver-custom-menu'],
+    ['cmx', 'image/x-cmx'],
+    ['cod', ['image/cis-cod', 'application/vnd.rim.cod']],
+    ['com', ['application/octet-stream', 'text/plain']],
+    ['conf', 'text/plain'],
+    ['cpio', 'application/x-cpio'],
+    ['cpp', 'text/x-c'],
+    ['cpt', ['application/mac-compactpro', 'application/x-compactpro', 'application/x-cpt']],
+    ['crd', 'application/x-mscardfile'],
+    ['crl', ['application/pkix-crl', 'application/pkcs-crl']],
+    ['crt', ['application/pkix-cert', 'application/x-x509-user-cert', 'application/x-x509-ca-cert']],
+    ['cryptonote', 'application/vnd.rig.cryptonote'],
+    ['csh', ['text/x-script.csh', 'application/x-csh']],
+    ['csml', 'chemical/x-csml'],
+    ['csp', 'application/vnd.commonspace'],
+    ['css', ['text/css', 'application/x-pointplus']],
+    ['csv', 'text/csv'],
+    ['cu', 'application/cu-seeme'],
+    ['curl', 'text/vnd.curl'],
+    ['cww', 'application/prs.cww'],
+    ['cxx', 'text/plain'],
+    ['dae', 'model/vnd.collada+xml'],
+    ['daf', 'application/vnd.mobius.daf'],
+    ['davmount', 'application/davmount+xml'],
+    ['dcr', 'application/x-director'],
+    ['dcurl', 'text/vnd.curl.dcurl'],
+    ['dd2', 'application/vnd.oma.dd2+xml'],
+    ['ddd', 'application/vnd.fujixerox.ddd'],
+    ['deb', 'application/x-debian-package'],
+    ['deepv', 'application/x-deepv'],
+    ['def', 'text/plain'],
+    ['der', 'application/x-x509-ca-cert'],
+    ['dfac', 'application/vnd.dreamfactory'],
+    ['dif', 'video/x-dv'],
+    ['dir', 'application/x-director'],
+    ['dis', 'application/vnd.mobius.dis'],
+    ['djvu', 'image/vnd.djvu'],
+    ['dl', ['video/dl', 'video/x-dl']],
+    ['dll', 'application/x-msdownload'],
+    ['dms', 'application/octet-stream'],
+    ['dna', 'application/vnd.dna'],
+    ['doc', 'application/msword'],
+    ['docm', 'application/vnd.ms-word.document.macroenabled.12'],
+    ['docx', 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'],
+    ['dot', 'application/msword'],
+    ['dotm', 'application/vnd.ms-word.template.macroenabled.12'],
+    ['dotx', 'application/vnd.openxmlformats-officedocument.wordprocessingml.template'],
+    ['dp', ['application/commonground', 'application/vnd.osgi.dp']],
+    ['dpg', 'application/vnd.dpgraph'],
+    ['dra', 'audio/vnd.dra'],
+    ['drw', 'application/drafting'],
+    ['dsc', 'text/prs.lines.tag'],
+    ['dssc', 'application/dssc+der'],
+    ['dtb', 'application/x-dtbook+xml'],
+    ['dtd', 'application/xml-dtd'],
+    ['dts', 'audio/vnd.dts'],
+    ['dtshd', 'audio/vnd.dts.hd'],
+    ['dump', 'application/octet-stream'],
+    ['dv', 'video/x-dv'],
+    ['dvi', 'application/x-dvi'],
+    ['dwf', ['model/vnd.dwf', 'drawing/x-dwf']],
+    ['dwg', ['application/acad', 'image/vnd.dwg', 'image/x-dwg']],
+    ['dxf', ['application/dxf', 'image/vnd.dwg', 'image/vnd.dxf', 'image/x-dwg']],
+    ['dxp', 'application/vnd.spotfire.dxp'],
+    ['dxr', 'application/x-director'],
+    ['ecelp4800', 'audio/vnd.nuera.ecelp4800'],
+    ['ecelp7470', 'audio/vnd.nuera.ecelp7470'],
+    ['ecelp9600', 'audio/vnd.nuera.ecelp9600'],
+    ['edm', 'application/vnd.novadigm.edm'],
+    ['edx', 'application/vnd.novadigm.edx'],
+    ['efif', 'application/vnd.picsel'],
+    ['ei6', 'application/vnd.pg.osasli'],
+    ['el', 'text/x-script.elisp'],
+    ['elc', ['application/x-elc', 'application/x-bytecode.elisp']],
+    ['eml', 'message/rfc822'],
+    ['emma', 'application/emma+xml'],
+    ['env', 'application/x-envoy'],
+    ['eol', 'audio/vnd.digital-winds'],
+    ['eot', 'application/vnd.ms-fontobject'],
+    ['eps', 'application/postscript'],
+    ['epub', 'application/epub+zip'],
+    ['es', ['application/ecmascript', 'application/x-esrehber']],
+    ['es3', 'application/vnd.eszigno3+xml'],
+    ['esf', 'application/vnd.epson.esf'],
+    ['etx', 'text/x-setext'],
+    ['evy', ['application/envoy', 'application/x-envoy']],
+    ['exe', ['application/octet-stream', 'application/x-msdownload']],
+    ['exi', 'application/exi'],
+    ['ext', 'application/vnd.novadigm.ext'],
+    ['ez2', 'application/vnd.ezpix-album'],
+    ['ez3', 'application/vnd.ezpix-package'],
+    ['f', ['text/plain', 'text/x-fortran']],
+    ['f4v', 'video/x-f4v'],
+    ['f77', 'text/x-fortran'],
+    ['f90', ['text/plain', 'text/x-fortran']],
+    ['fbs', 'image/vnd.fastbidsheet'],
+    ['fcs', 'application/vnd.isac.fcs'],
+    ['fdf', 'application/vnd.fdf'],
+    ['fe_launch', 'application/vnd.denovo.fcselayout-link'],
+    ['fg5', 'application/vnd.fujitsu.oasysgp'],
+    ['fh', 'image/x-freehand'],
+    ['fif', ['application/fractals', 'image/fif']],
+    ['fig', 'application/x-xfig'],
+    ['fli', ['video/fli', 'video/x-fli']],
+    ['flo', ['image/florian', 'application/vnd.micrografx.flo']],
+    ['flr', 'x-world/x-vrml'],
+    ['flv', 'video/x-flv'],
+    ['flw', 'application/vnd.kde.kivio'],
+    ['flx', 'text/vnd.fmi.flexstor'],
+    ['fly', 'text/vnd.fly'],
+    ['fm', 'application/vnd.framemaker'],
+    ['fmf', 'video/x-atomic3d-feature'],
+    ['fnc', 'application/vnd.frogans.fnc'],
+    ['for', ['text/plain', 'text/x-fortran']],
+    ['fpx', ['image/vnd.fpx', 'image/vnd.net-fpx']],
+    ['frl', 'application/freeloader'],
+    ['fsc', 'application/vnd.fsc.weblaunch'],
+    ['fst', 'image/vnd.fst'],
+    ['ftc', 'application/vnd.fluxtime.clip'],
+    ['fti', 'application/vnd.anser-web-funds-transfer-initiation'],
+    ['funk', 'audio/make'],
+    ['fvt', 'video/vnd.fvt'],
+    ['fxp', 'application/vnd.adobe.fxp'],
+    ['fzs', 'application/vnd.fuzzysheet'],
+    ['g', 'text/plain'],
+    ['g2w', 'application/vnd.geoplan'],
+    ['g3', 'image/g3fax'],
+    ['g3w', 'application/vnd.geospace'],
+    ['gac', 'application/vnd.groove-account'],
+    ['gdl', 'model/vnd.gdl'],
+    ['geo', 'application/vnd.dynageo'],
+    ['gex', 'application/vnd.geometry-explorer'],
+    ['ggb', 'application/vnd.geogebra.file'],
+    ['ggt', 'application/vnd.geogebra.tool'],
+    ['ghf', 'application/vnd.groove-help'],
+    ['gif', 'image/gif'],
+    ['gim', 'application/vnd.groove-identity-message'],
+    ['gl', ['video/gl', 'video/x-gl']],
+    ['gmx', 'application/vnd.gmx'],
+    ['gnumeric', 'application/x-gnumeric'],
+    ['gph', 'application/vnd.flographit'],
+    ['gqf', 'application/vnd.grafeq'],
+    ['gram', 'application/srgs'],
+    ['grv', 'application/vnd.groove-injector'],
+    ['grxml', 'application/srgs+xml'],
+    ['gsd', 'audio/x-gsm'],
+    ['gsf', 'application/x-font-ghostscript'],
+    ['gsm', 'audio/x-gsm'],
+    ['gsp', 'application/x-gsp'],
+    ['gss', 'application/x-gss'],
+    ['gtar', 'application/x-gtar'],
+    ['gtm', 'application/vnd.groove-tool-message'],
+    ['gtw', 'model/vnd.gtw'],
+    ['gv', 'text/vnd.graphviz'],
+    ['gxt', 'application/vnd.geonext'],
+    ['gz', ['application/x-gzip', 'application/x-compressed']],
+    ['gzip', ['multipart/x-gzip', 'application/x-gzip']],
+    ['h', ['text/plain', 'text/x-h']],
+    ['h261', 'video/h261'],
+    ['h263', 'video/h263'],
+    ['h264', 'video/h264'],
+    ['hal', 'application/vnd.hal+xml'],
+    ['hbci', 'application/vnd.hbci'],
+    ['hdf', 'application/x-hdf'],
+    ['help', 'application/x-helpfile'],
+    ['hgl', 'application/vnd.hp-hpgl'],
+    ['hh', ['text/plain', 'text/x-h']],
+    ['hlb', 'text/x-script'],
+    ['hlp', ['application/winhlp', 'application/hlp', 'application/x-helpfile', 'application/x-winhelp']],
+    ['hpg', 'application/vnd.hp-hpgl'],
+    ['hpgl', 'application/vnd.hp-hpgl'],
+    ['hpid', 'application/vnd.hp-hpid'],
+    ['hps', 'application/vnd.hp-hps'],
+    [
+        'hqx',
+        [
+            'application/mac-binhex40',
+            'application/binhex',
+            'application/binhex4',
+            'application/mac-binhex',
+            'application/x-binhex40',
+            'application/x-mac-binhex40'
+        ]
+    ],
+    ['hta', 'application/hta'],
+    ['htc', 'text/x-component'],
+    ['htke', 'application/vnd.kenameaapp'],
+    ['htm', 'text/html'],
+    ['html', 'text/html'],
+    ['htmls', 'text/html'],
+    ['htt', 'text/webviewhtml'],
+    ['htx', 'text/html'],
+    ['hvd', 'application/vnd.yamaha.hv-dic'],
+    ['hvp', 'application/vnd.yamaha.hv-voice'],
+    ['hvs', 'application/vnd.yamaha.hv-script'],
+    ['i2g', 'application/vnd.intergeo'],
+    ['icc', 'application/vnd.iccprofile'],
+    ['ice', 'x-conference/x-cooltalk'],
+    ['ico', 'image/x-icon'],
+    ['ics', 'text/calendar'],
+    ['idc', 'text/plain'],
+    ['ief', 'image/ief'],
+    ['iefs', 'image/ief'],
+    ['ifm', 'application/vnd.shana.informed.formdata'],
+    ['iges', ['application/iges', 'model/iges']],
+    ['igl', 'application/vnd.igloader'],
+    ['igm', 'application/vnd.insors.igm'],
+    ['igs', ['application/iges', 'model/iges']],
+    ['igx', 'application/vnd.micrografx.igx'],
+    ['iif', 'application/vnd.shana.informed.interchange'],
+    ['iii', 'application/x-iphone'],
+    ['ima', 'application/x-ima'],
+    ['imap', 'application/x-httpd-imap'],
+    ['imp', 'application/vnd.accpac.simply.imp'],
+    ['ims', 'application/vnd.ms-ims'],
+    ['inf', 'application/inf'],
+    ['ins', ['application/x-internet-signup', 'application/x-internett-signup']],
+    ['ip', 'application/x-ip2'],
+    ['ipfix', 'application/ipfix'],
+    ['ipk', 'application/vnd.shana.informed.package'],
+    ['irm', 'application/vnd.ibm.rights-management'],
+    ['irp', 'application/vnd.irepository.package+xml'],
+    ['isp', 'application/x-internet-signup'],
+    ['isu', 'video/x-isvideo'],
+    ['it', 'audio/it'],
+    ['itp', 'application/vnd.shana.informed.formtemplate'],
+    ['iv', 'application/x-inventor'],
+    ['ivp', 'application/vnd.immervision-ivp'],
+    ['ivr', 'i-world/i-vrml'],
+    ['ivu', 'application/vnd.immervision-ivu'],
+    ['ivy', 'application/x-livescreen'],
+    ['jad', 'text/vnd.sun.j2me.app-descriptor'],
+    ['jam', ['application/vnd.jam', 'audio/x-jam']],
+    ['jar', 'application/java-archive'],
+    ['jav', ['text/plain', 'text/x-java-source']],
+    ['java', ['text/plain', 'text/x-java-source,java', 'text/x-java-source']],
+    ['jcm', 'application/x-java-commerce'],
+    ['jfif', ['image/pipeg', 'image/jpeg', 'image/pjpeg']],
+    ['jfif-tbnl', 'image/jpeg'],
+    ['jisp', 'application/vnd.jisp'],
+    ['jlt', 'application/vnd.hp-jlyt'],
+    ['jnlp', 'application/x-java-jnlp-file'],
+    ['joda', 'application/vnd.joost.joda-archive'],
+    ['jpe', ['image/jpeg', 'image/pjpeg']],
+    ['jpeg', ['image/jpeg', 'image/pjpeg']],
+    ['jpg', ['image/jpeg', 'image/pjpeg']],
+    ['jpgv', 'video/jpeg'],
+    ['jpm', 'video/jpm'],
+    ['jps', 'image/x-jps'],
+    ['js', ['application/javascript', 'application/ecmascript', 'text/javascript', 'text/ecmascript', 'application/x-javascript']],
+    ['json', 'application/json'],
+    ['jut', 'image/jutvision'],
+    ['kar', ['audio/midi', 'music/x-karaoke']],
+    ['karbon', 'application/vnd.kde.karbon'],
+    ['kfo', 'application/vnd.kde.kformula'],
+    ['kia', 'application/vnd.kidspiration'],
+    ['kml', 'application/vnd.google-earth.kml+xml'],
+    ['kmz', 'application/vnd.google-earth.kmz'],
+    ['kne', 'application/vnd.kinar'],
+    ['kon', 'application/vnd.kde.kontour'],
+    ['kpr', 'application/vnd.kde.kpresenter'],
+    ['ksh', ['application/x-ksh', 'text/x-script.ksh']],
+    ['ksp', 'application/vnd.kde.kspread'],
+    ['ktx', 'image/ktx'],
+    ['ktz', 'application/vnd.kahootz'],
+    ['kwd', 'application/vnd.kde.kword'],
+    ['la', ['audio/nspaudio', 'audio/x-nspaudio']],
+    ['lam', 'audio/x-liveaudio'],
+    ['lasxml', 'application/vnd.las.las+xml'],
+    ['latex', 'application/x-latex'],
+    ['lbd', 'application/vnd.llamagraphics.life-balance.desktop'],
+    ['lbe', 'application/vnd.llamagraphics.life-balance.exchange+xml'],
+    ['les', 'application/vnd.hhe.lesson-player'],
+    ['lha', ['application/octet-stream', 'application/lha', 'application/x-lha']],
+    ['lhx', 'application/octet-stream'],
+    ['link66', 'application/vnd.route66.link66+xml'],
+    ['list', 'text/plain'],
+    ['lma', ['audio/nspaudio', 'audio/x-nspaudio']],
+    ['log', 'text/plain'],
+    ['lrm', 'application/vnd.ms-lrm'],
+    ['lsf', 'video/x-la-asf'],
+    ['lsp', ['application/x-lisp', 'text/x-script.lisp']],
+    ['lst', 'text/plain'],
+    ['lsx', ['video/x-la-asf', 'text/x-la-asf']],
+    ['ltf', 'application/vnd.frogans.ltf'],
+    ['ltx', 'application/x-latex'],
+    ['lvp', 'audio/vnd.lucent.voice'],
+    ['lwp', 'application/vnd.lotus-wordpro'],
+    ['lzh', ['application/octet-stream', 'application/x-lzh']],
+    ['lzx', ['application/lzx', 'application/octet-stream', 'application/x-lzx']],
+    ['m', ['text/plain', 'text/x-m']],
+    ['m13', 'application/x-msmediaview'],
+    ['m14', 'application/x-msmediaview'],
+    ['m1v', 'video/mpeg'],
+    ['m21', 'application/mp21'],
+    ['m2a', 'audio/mpeg'],
+    ['m2v', 'video/mpeg'],
+    ['m3u', ['audio/x-mpegurl', 'audio/x-mpequrl']],
+    ['m3u8', 'application/vnd.apple.mpegurl'],
+    ['m4v', 'video/x-m4v'],
+    ['ma', 'application/mathematica'],
+    ['mads', 'application/mads+xml'],
+    ['mag', 'application/vnd.ecowin.chart'],
+    ['man', 'application/x-troff-man'],
+    ['map', 'application/x-navimap'],
+    ['mar', 'text/plain'],
+    ['mathml', 'application/mathml+xml'],
+    ['mbd', 'application/mbedlet'],
+    ['mbk', 'application/vnd.mobius.mbk'],
+    ['mbox', 'application/mbox'],
+    ['mc$', 'application/x-magic-cap-package-1.0'],
+    ['mc1', 'application/vnd.medcalcdata'],
+    ['mcd', ['application/mcad', 'application/vnd.mcd', 'application/x-mathcad']],
+    ['mcf', ['image/vasa', 'text/mcf']],
+    ['mcp', 'application/netmc'],
+    ['mcurl', 'text/vnd.curl.mcurl'],
+    ['mdb', 'application/x-msaccess'],
+    ['mdi', 'image/vnd.ms-modi'],
+    ['me', 'application/x-troff-me'],
+    ['meta4', 'application/metalink4+xml'],
+    ['mets', 'application/mets+xml'],
+    ['mfm', 'application/vnd.mfmp'],
+    ['mgp', 'application/vnd.osgeo.mapguide.package'],
+    ['mgz', 'application/vnd.proteus.magazine'],
+    ['mht', 'message/rfc822'],
+    ['mhtml', 'message/rfc822'],
+    ['mid', ['audio/mid', 'audio/midi', 'music/crescendo', 'x-music/x-midi', 'audio/x-midi', 'application/x-midi', 'audio/x-mid']],
+    ['midi', ['audio/midi', 'music/crescendo', 'x-music/x-midi', 'audio/x-midi', 'application/x-midi', 'audio/x-mid']],
+    ['mif', ['application/vnd.mif', 'application/x-mif', 'application/x-frame']],
+    ['mime', ['message/rfc822', 'www/mime']],
+    ['mj2', 'video/mj2'],
+    ['mjf', 'audio/x-vnd.audioexplosion.mjuicemediafile'],
+    ['mjpg', 'video/x-motion-jpeg'],
+    ['mlp', 'application/vnd.dolby.mlp'],
+    ['mm', ['application/base64', 'application/x-meme']],
+    ['mmd', 'application/vnd.chipnuts.karaoke-mmd'],
+    ['mme', 'application/base64'],
+    ['mmf', 'application/vnd.smaf'],
+    ['mmr', 'image/vnd.fujixerox.edmics-mmr'],
+    ['mny', 'application/x-msmoney'],
+    ['mod', ['audio/mod', 'audio/x-mod']],
+    ['mods', 'application/mods+xml'],
+    ['moov', 'video/quicktime'],
+    ['mov', 'video/quicktime'],
+    ['movie', 'video/x-sgi-movie'],
+    ['mp2', ['video/mpeg', 'audio/mpeg', 'video/x-mpeg', 'audio/x-mpeg', 'video/x-mpeq2a']],
+    ['mp3', ['audio/mpeg', 'audio/mpeg3', 'video/mpeg', 'audio/x-mpeg-3', 'video/x-mpeg']],
+    ['mp4', ['video/mp4', 'application/mp4']],
+    ['mp4a', 'audio/mp4'],
+    ['mpa', ['video/mpeg', 'audio/mpeg']],
+    ['mpc', ['application/vnd.mophun.certificate', 'application/x-project']],
+    ['mpe', 'video/mpeg'],
+    ['mpeg', 'video/mpeg'],
+    ['mpg', ['video/mpeg', 'audio/mpeg']],
+    ['mpga', 'audio/mpeg'],
+    ['mpkg', 'application/vnd.apple.installer+xml'],
+    ['mpm', 'application/vnd.blueice.multipass'],
+    ['mpn', 'application/vnd.mophun.application'],
+    ['mpp', 'application/vnd.ms-project'],
+    ['mpt', 'application/x-project'],
+    ['mpv', 'application/x-project'],
+    ['mpv2', 'video/mpeg'],
+    ['mpx', 'application/x-project'],
+    ['mpy', 'application/vnd.ibm.minipay'],
+    ['mqy', 'application/vnd.mobius.mqy'],
+    ['mrc', 'application/marc'],
+    ['mrcx', 'application/marcxml+xml'],
+    ['ms', 'application/x-troff-ms'],
+    ['mscml', 'application/mediaservercontrol+xml'],
+    ['mseq', 'application/vnd.mseq'],
+    ['msf', 'application/vnd.epson.msf'],
+    ['msg', 'application/vnd.ms-outlook'],
+    ['msh', 'model/mesh'],
+    ['msl', 'application/vnd.mobius.msl'],
+    ['msty', 'application/vnd.muvee.style'],
+    ['mts', 'model/vnd.mts'],
+    ['mus', 'application/vnd.musician'],
+    ['musicxml', 'application/vnd.recordare.musicxml+xml'],
+    ['mv', 'video/x-sgi-movie'],
+    ['mvb', 'application/x-msmediaview'],
+    ['mwf', 'application/vnd.mfer'],
+    ['mxf', 'application/mxf'],
+    ['mxl', 'application/vnd.recordare.musicxml'],
+    ['mxml', 'application/xv+xml'],
+    ['mxs', 'application/vnd.triscape.mxs'],
+    ['mxu', 'video/vnd.mpegurl'],
+    ['my', 'audio/make'],
+    ['mzz', 'application/x-vnd.audioexplosion.mzz'],
+    ['n-gage', 'application/vnd.nokia.n-gage.symbian.install'],
+    ['n3', 'text/n3'],
+    ['nap', 'image/naplps'],
+    ['naplps', 'image/naplps'],
+    ['nbp', 'application/vnd.wolfram.player'],
+    ['nc', 'application/x-netcdf'],
+    ['ncm', 'application/vnd.nokia.configuration-message'],
+    ['ncx', 'application/x-dtbncx+xml'],
+    ['ngdat', 'application/vnd.nokia.n-gage.data'],
+    ['nif', 'image/x-niff'],
+    ['niff', 'image/x-niff'],
+    ['nix', 'application/x-mix-transfer'],
+    ['nlu', 'application/vnd.neurolanguage.nlu'],
+    ['nml', 'application/vnd.enliven'],
+    ['nnd', 'application/vnd.noblenet-directory'],
+    ['nns', 'application/vnd.noblenet-sealer'],
+    ['nnw', 'application/vnd.noblenet-web'],
+    ['npx', 'image/vnd.net-fpx'],
+    ['nsc', 'application/x-conference'],
+    ['nsf', 'application/vnd.lotus-notes'],
+    ['nvd', 'application/x-navidoc'],
+    ['nws', 'message/rfc822'],
+    ['o', 'application/octet-stream'],
+    ['oa2', 'application/vnd.fujitsu.oasys2'],
+    ['oa3', 'application/vnd.fujitsu.oasys3'],
+    ['oas', 'application/vnd.fujitsu.oasys'],
+    ['obd', 'application/x-msbinder'],
+    ['oda', 'application/oda'],
+    ['odb', 'application/vnd.oasis.opendocument.database'],
+    ['odc', 'application/vnd.oasis.opendocument.chart'],
+    ['odf', 'application/vnd.oasis.opendocument.formula'],
+    ['odft', 'application/vnd.oasis.opendocument.formula-template'],
+    ['odg', 'application/vnd.oasis.opendocument.graphics'],
+    ['odi', 'application/vnd.oasis.opendocument.image'],
+    ['odm', 'application/vnd.oasis.opendocument.text-master'],
+    ['odp', 'application/vnd.oasis.opendocument.presentation'],
+    ['ods', 'application/vnd.oasis.opendocument.spreadsheet'],
+    ['odt', 'application/vnd.oasis.opendocument.text'],
+    ['oga', 'audio/ogg'],
+    ['ogv', 'video/ogg'],
+    ['ogx', 'application/ogg'],
+    ['omc', 'application/x-omc'],
+    ['omcd', 'application/x-omcdatamaker'],
+    ['omcr', 'application/x-omcregerator'],
+    ['onetoc', 'application/onenote'],
+    ['opf', 'application/oebps-package+xml'],
+    ['org', 'application/vnd.lotus-organizer'],
+    ['osf', 'application/vnd.yamaha.openscoreformat'],
+    ['osfpvg', 'application/vnd.yamaha.openscoreformat.osfpvg+xml'],
+    ['otc', 'application/vnd.oasis.opendocument.chart-template'],
+    ['otf', 'application/x-font-otf'],
+    ['otg', 'application/vnd.oasis.opendocument.graphics-template'],
+    ['oth', 'application/vnd.oasis.opendocument.text-web'],
+    ['oti', 'application/vnd.oasis.opendocument.image-template'],
+    ['otp', 'application/vnd.oasis.opendocument.presentation-template'],
+    ['ots', 'application/vnd.oasis.opendocument.spreadsheet-template'],
+    ['ott', 'application/vnd.oasis.opendocument.text-template'],
+    ['oxt', 'application/vnd.openofficeorg.extension'],
+    ['p', 'text/x-pascal'],
+    ['p10', ['application/pkcs10', 'application/x-pkcs10']],
+    ['p12', ['application/pkcs-12', 'application/x-pkcs12']],
+    ['p7a', 'application/x-pkcs7-signature'],
+    ['p7b', 'application/x-pkcs7-certificates'],
+    ['p7c', ['application/pkcs7-mime', 'application/x-pkcs7-mime']],
+    ['p7m', ['application/pkcs7-mime', 'application/x-pkcs7-mime']],
+    ['p7r', 'application/x-pkcs7-certreqresp'],
+    ['p7s', ['application/pkcs7-signature', 'application/x-pkcs7-signature']],
+    ['p8', 'application/pkcs8'],
+    ['par', 'text/plain-bas'],
+    ['part', 'application/pro_eng'],
+    ['pas', 'text/pascal'],
+    ['paw', 'application/vnd.pawaafile'],
+    ['pbd', 'application/vnd.powerbuilder6'],
+    ['pbm', 'image/x-portable-bitmap'],
+    ['pcf', 'application/x-font-pcf'],
+    ['pcl', ['application/vnd.hp-pcl', 'application/x-pcl']],
+    ['pclxl', 'application/vnd.hp-pclxl'],
+    ['pct', 'image/x-pict'],
+    ['pcurl', 'application/vnd.curl.pcurl'],
+    ['pcx', 'image/x-pcx'],
+    ['pdb', ['application/vnd.palm', 'chemical/x-pdb']],
+    ['pdf', 'application/pdf'],
+    ['pfa', 'application/x-font-type1'],
+    ['pfr', 'application/font-tdpfr'],
+    ['pfunk', ['audio/make', 'audio/make.my.funk']],
+    ['pfx', 'application/x-pkcs12'],
+    ['pgm', ['image/x-portable-graymap', 'image/x-portable-greymap']],
+    ['pgn', 'application/x-chess-pgn'],
+    ['pgp', 'application/pgp-signature'],
+    ['pic', ['image/pict', 'image/x-pict']],
+    ['pict', 'image/pict'],
+    ['pkg', 'application/x-newton-compatible-pkg'],
+    ['pki', 'application/pkixcmp'],
+    ['pkipath', 'application/pkix-pkipath'],
+    ['pko', ['application/ynd.ms-pkipko', 'application/vnd.ms-pki.pko']],
+    ['pl', ['text/plain', 'text/x-script.perl']],
+    ['plb', 'application/vnd.3gpp.pic-bw-large'],
+    ['plc', 'application/vnd.mobius.plc'],
+    ['plf', 'application/vnd.pocketlearn'],
+    ['pls', 'application/pls+xml'],
+    ['plx', 'application/x-pixclscript'],
+    ['pm', ['text/x-script.perl-module', 'image/x-xpixmap']],
+    ['pm4', 'application/x-pagemaker'],
+    ['pm5', 'application/x-pagemaker'],
+    ['pma', 'application/x-perfmon'],
+    ['pmc', 'application/x-perfmon'],
+    ['pml', ['application/vnd.ctc-posml', 'application/x-perfmon']],
+    ['pmr', 'application/x-perfmon'],
+    ['pmw', 'application/x-perfmon'],
+    ['png', 'image/png'],
+    ['pnm', ['application/x-portable-anymap', 'image/x-portable-anymap']],
+    ['portpkg', 'application/vnd.macports.portpkg'],
+    ['pot', ['application/vnd.ms-powerpoint', 'application/mspowerpoint']],
+    ['potm', 'application/vnd.ms-powerpoint.template.macroenabled.12'],
+    ['potx', 'application/vnd.openxmlformats-officedocument.presentationml.template'],
+    ['pov', 'model/x-pov'],
+    ['ppa', 'application/vnd.ms-powerpoint'],
+    ['ppam', 'application/vnd.ms-powerpoint.addin.macroenabled.12'],
+    ['ppd', 'application/vnd.cups-ppd'],
+    ['ppm', 'image/x-portable-pixmap'],
+    ['pps', ['application/vnd.ms-powerpoint', 'application/mspowerpoint']],
+    ['ppsm', 'application/vnd.ms-powerpoint.slideshow.macroenabled.12'],
+    ['ppsx', 'application/vnd.openxmlformats-officedocument.presentationml.slideshow'],
+    ['ppt', ['application/vnd.ms-powerpoint', 'application/mspowerpoint', 'application/powerpoint', 'application/x-mspowerpoint']],
+    ['pptm', 'application/vnd.ms-powerpoint.presentation.macroenabled.12'],
+    ['pptx', 'application/vnd.openxmlformats-officedocument.presentationml.presentation'],
+    ['ppz', 'application/mspowerpoint'],
+    ['prc', 'application/x-mobipocket-ebook'],
+    ['pre', ['application/vnd.lotus-freelance', 'application/x-freelance']],
+    ['prf', 'application/pics-rules'],
+    ['prt', 'application/pro_eng'],
+    ['ps', 'application/postscript'],
+    ['psb', 'application/vnd.3gpp.pic-bw-small'],
+    ['psd', ['application/octet-stream', 'image/vnd.adobe.photoshop']],
+    ['psf', 'application/x-font-linux-psf'],
+    ['pskcxml', 'application/pskc+xml'],
+    ['ptid', 'application/vnd.pvi.ptid1'],
+    ['pub', 'application/x-mspublisher'],
+    ['pvb', 'application/vnd.3gpp.pic-bw-var'],
+    ['pvu', 'paleovu/x-pv'],
+    ['pwn', 'application/vnd.3m.post-it-notes'],
+    ['pwz', 'application/vnd.ms-powerpoint'],
+    ['py', 'text/x-script.phyton'],
+    ['pya', 'audio/vnd.ms-playready.media.pya'],
+    ['pyc', 'applicaiton/x-bytecode.python'],
+    ['pyv', 'video/vnd.ms-playready.media.pyv'],
+    ['qam', 'application/vnd.epson.quickanime'],
+    ['qbo', 'application/vnd.intu.qbo'],
+    ['qcp', 'audio/vnd.qcelp'],
+    ['qd3', 'x-world/x-3dmf'],
+    ['qd3d', 'x-world/x-3dmf'],
+    ['qfx', 'application/vnd.intu.qfx'],
+    ['qif', 'image/x-quicktime'],
+    ['qps', 'application/vnd.publishare-delta-tree'],
+    ['qt', 'video/quicktime'],
+    ['qtc', 'video/x-qtc'],
+    ['qti', 'image/x-quicktime'],
+    ['qtif', 'image/x-quicktime'],
+    ['qxd', 'application/vnd.quark.quarkxpress'],
+    ['ra', ['audio/x-realaudio', 'audio/x-pn-realaudio', 'audio/x-pn-realaudio-plugin']],
+    ['ram', 'audio/x-pn-realaudio'],
+    ['rar', 'application/x-rar-compressed'],
+    ['ras', ['image/cmu-raster', 'application/x-cmu-raster', 'image/x-cmu-raster']],
+    ['rast', 'image/cmu-raster'],
+    ['rcprofile', 'application/vnd.ipunplugged.rcprofile'],
+    ['rdf', 'application/rdf+xml'],
+    ['rdz', 'application/vnd.data-vision.rdz'],
+    ['rep', 'application/vnd.businessobjects'],
+    ['res', 'application/x-dtbresource+xml'],
+    ['rexx', 'text/x-script.rexx'],
+    ['rf', 'image/vnd.rn-realflash'],
+    ['rgb', 'image/x-rgb'],
+    ['rif', 'application/reginfo+xml'],
+    ['rip', 'audio/vnd.rip'],
+    ['rl', 'application/resource-lists+xml'],
+    ['rlc', 'image/vnd.fujixerox.edmics-rlc'],
+    ['rld', 'application/resource-lists-diff+xml'],
+    ['rm', ['application/vnd.rn-realmedia', 'audio/x-pn-realaudio']],
+    ['rmi', 'audio/mid'],
+    ['rmm', 'audio/x-pn-realaudio'],
+    ['rmp', ['audio/x-pn-realaudio-plugin', 'audio/x-pn-realaudio']],
+    ['rms', 'application/vnd.jcp.javame.midlet-rms'],
+    ['rnc', 'application/relax-ng-compact-syntax'],
+    ['rng', ['application/ringing-tones', 'application/vnd.nokia.ringing-tone']],
+    ['rnx', 'application/vnd.rn-realplayer'],
+    ['roff', 'application/x-troff'],
+    ['rp', 'image/vnd.rn-realpix'],
+    ['rp9', 'application/vnd.cloanto.rp9'],
+    ['rpm', 'audio/x-pn-realaudio-plugin'],
+    ['rpss', 'application/vnd.nokia.radio-presets'],
+    ['rpst', 'application/vnd.nokia.radio-preset'],
+    ['rq', 'application/sparql-query'],
+    ['rs', 'application/rls-services+xml'],
+    ['rsd', 'application/rsd+xml'],
+    ['rt', ['text/richtext', 'text/vnd.rn-realtext']],
+    ['rtf', ['application/rtf', 'text/richtext', 'application/x-rtf']],
+    ['rtx', ['text/richtext', 'application/rtf']],
+    ['rv', 'video/vnd.rn-realvideo'],
+    ['s', 'text/x-asm'],
+    ['s3m', 'audio/s3m'],
+    ['saf', 'application/vnd.yamaha.smaf-audio'],
+    ['saveme', 'application/octet-stream'],
+    ['sbk', 'application/x-tbook'],
+    ['sbml', 'application/sbml+xml'],
+    ['sc', 'application/vnd.ibm.secure-container'],
+    ['scd', 'application/x-msschedule'],
+    ['scm', ['application/vnd.lotus-screencam', 'video/x-scm', 'text/x-script.guile', 'application/x-lotusscreencam', 'text/x-script.scheme']],
+    ['scq', 'application/scvp-cv-request'],
+    ['scs', 'application/scvp-cv-response'],
+    ['sct', 'text/scriptlet'],
+    ['scurl', 'text/vnd.curl.scurl'],
+    ['sda', 'application/vnd.stardivision.draw'],
+    ['sdc', 'application/vnd.stardivision.calc'],
+    ['sdd', 'application/vnd.stardivision.impress'],
+    ['sdkm', 'application/vnd.solent.sdkm+xml'],
+    ['sdml', 'text/plain'],
+    ['sdp', ['application/sdp', 'application/x-sdp']],
+    ['sdr', 'application/sounder'],
+    ['sdw', 'application/vnd.stardivision.writer'],
+    ['sea', ['application/sea', 'application/x-sea']],
+    ['see', 'application/vnd.seemail'],
+    ['seed', 'application/vnd.fdsn.seed'],
+    ['sema', 'application/vnd.sema'],
+    ['semd', 'application/vnd.semd'],
+    ['semf', 'application/vnd.semf'],
+    ['ser', 'application/java-serialized-object'],
+    ['set', 'application/set'],
+    ['setpay', 'application/set-payment-initiation'],
+    ['setreg', 'application/set-registration-initiation'],
+    ['sfd-hdstx', 'application/vnd.hydrostatix.sof-data'],
+    ['sfs', 'application/vnd.spotfire.sfs'],
+    ['sgl', 'application/vnd.stardivision.writer-global'],
+    ['sgm', ['text/sgml', 'text/x-sgml']],
+    ['sgml', ['text/sgml', 'text/x-sgml']],
+    ['sh', ['application/x-shar', 'application/x-bsh', 'application/x-sh', 'text/x-script.sh']],
+    ['shar', ['application/x-bsh', 'application/x-shar']],
+    ['shf', 'application/shf+xml'],
+    ['shtml', ['text/html', 'text/x-server-parsed-html']],
+    ['sid', 'audio/x-psid'],
+    ['sis', 'application/vnd.symbian.install'],
+    ['sit', ['application/x-stuffit', 'application/x-sit']],
+    ['sitx', 'application/x-stuffitx'],
+    ['skd', 'application/x-koan'],
+    ['skm', 'application/x-koan'],
+    ['skp', ['application/vnd.koan', 'application/x-koan']],
+    ['skt', 'application/x-koan'],
+    ['sl', 'application/x-seelogo'],
+    ['sldm', 'application/vnd.ms-powerpoint.slide.macroenabled.12'],
+    ['sldx', 'application/vnd.openxmlformats-officedocument.presentationml.slide'],
+    ['slt', 'application/vnd.epson.salt'],
+    ['sm', 'application/vnd.stepmania.stepchart'],
+    ['smf', 'application/vnd.stardivision.math'],
+    ['smi', ['application/smil', 'application/smil+xml']],
+    ['smil', 'application/smil'],
+    ['snd', ['audio/basic', 'audio/x-adpcm']],
+    ['snf', 'application/x-font-snf'],
+    ['sol', 'application/solids'],
+    ['spc', ['text/x-speech', 'application/x-pkcs7-certificates']],
+    ['spf', 'application/vnd.yamaha.smaf-phrase'],
+    ['spl', ['application/futuresplash', 'application/x-futuresplash']],
+    ['spot', 'text/vnd.in3d.spot'],
+    ['spp', 'application/scvp-vp-response'],
+    ['spq', 'application/scvp-vp-request'],
+    ['spr', 'application/x-sprite'],
+    ['sprite', 'application/x-sprite'],
+    ['src', 'application/x-wais-source'],
+    ['sru', 'application/sru+xml'],
+    ['srx', 'application/sparql-results+xml'],
+    ['sse', 'application/vnd.kodak-descriptor'],
+    ['ssf', 'application/vnd.epson.ssf'],
+    ['ssi', 'text/x-server-parsed-html'],
+    ['ssm', 'application/streamingmedia'],
+    ['ssml', 'application/ssml+xml'],
+    ['sst', ['application/vnd.ms-pkicertstore', 'application/vnd.ms-pki.certstore']],
+    ['st', 'application/vnd.sailingtracker.track'],
+    ['stc', 'application/vnd.sun.xml.calc.template'],
+    ['std', 'application/vnd.sun.xml.draw.template'],
+    ['step', 'application/step'],
+    ['stf', 'application/vnd.wt.stf'],
+    ['sti', 'application/vnd.sun.xml.impress.template'],
+    ['stk', 'application/hyperstudio'],
+    ['stl', ['application/vnd.ms-pkistl', 'application/sla', 'application/vnd.ms-pki.stl', 'application/x-navistyle']],
+    ['stm', 'text/html'],
+    ['stp', 'application/step'],
+    ['str', 'application/vnd.pg.format'],
+    ['stw', 'application/vnd.sun.xml.writer.template'],
+    ['sub', 'image/vnd.dvb.subtitle'],
+    ['sus', 'application/vnd.sus-calendar'],
+    ['sv4cpio', 'application/x-sv4cpio'],
+    ['sv4crc', 'application/x-sv4crc'],
+    ['svc', 'application/vnd.dvb.service'],
+    ['svd', 'application/vnd.svd'],
+    ['svf', ['image/vnd.dwg', 'image/x-dwg']],
+    ['svg', 'image/svg+xml'],
+    ['svr', ['x-world/x-svr', 'application/x-world']],
+    ['swf', 'application/x-shockwave-flash'],
+    ['swi', 'application/vnd.aristanetworks.swi'],
+    ['sxc', 'application/vnd.sun.xml.calc'],
+    ['sxd', 'application/vnd.sun.xml.draw'],
+    ['sxg', 'application/vnd.sun.xml.writer.global'],
+    ['sxi', 'application/vnd.sun.xml.impress'],
+    ['sxm', 'application/vnd.sun.xml.math'],
+    ['sxw', 'application/vnd.sun.xml.writer'],
+    ['t', ['text/troff', 'application/x-troff']],
+    ['talk', 'text/x-speech'],
+    ['tao', 'application/vnd.tao.intent-module-archive'],
+    ['tar', 'application/x-tar'],
+    ['tbk', ['application/toolbook', 'application/x-tbook']],
+    ['tcap', 'application/vnd.3gpp2.tcap'],
+    ['tcl', ['text/x-script.tcl', 'application/x-tcl']],
+    ['tcsh', 'text/x-script.tcsh'],
+    ['teacher', 'application/vnd.smart.teacher'],
+    ['tei', 'application/tei+xml'],
+    ['tex', 'application/x-tex'],
+    ['texi', 'application/x-texinfo'],
+    ['texinfo', 'application/x-texinfo'],
+    ['text', ['application/plain', 'text/plain']],
+    ['tfi', 'application/thraud+xml'],
+    ['tfm', 'application/x-tex-tfm'],
+    ['tgz', ['application/gnutar', 'application/x-compressed']],
+    ['thmx', 'application/vnd.ms-officetheme'],
+    ['tif', ['image/tiff', 'image/x-tiff']],
+    ['tiff', ['image/tiff', 'image/x-tiff']],
+    ['tmo', 'application/vnd.tmobile-livetv'],
+    ['torrent', 'application/x-bittorrent'],
+    ['tpl', 'application/vnd.groove-tool-template'],
+    ['tpt', 'application/vnd.trid.tpt'],
+    ['tr', 'application/x-troff'],
+    ['tra', 'application/vnd.trueapp'],
+    ['trm', 'application/x-msterminal'],
+    ['tsd', 'application/timestamped-data'],
+    ['tsi', 'audio/tsp-audio'],
+    ['tsp', ['application/dsptype', 'audio/tsplayer']],
+    ['tsv', 'text/tab-separated-values'],
+    ['ttf', 'application/x-font-ttf'],
+    ['ttl', 'text/turtle'],
+    ['turbot', 'image/florian'],
+    ['twd', 'application/vnd.simtech-mindmapper'],
+    ['txd', 'application/vnd.genomatix.tuxedo'],
+    ['txf', 'application/vnd.mobius.txf'],
+    ['txt', 'text/plain'],
+    ['ufd', 'application/vnd.ufdl'],
+    ['uil', 'text/x-uil'],
+    ['uls', 'text/iuls'],
+    ['umj', 'application/vnd.umajin'],
+    ['uni', 'text/uri-list'],
+    ['unis', 'text/uri-list'],
+    ['unityweb', 'application/vnd.unity'],
+    ['unv', 'application/i-deas'],
+    ['uoml', 'application/vnd.uoml+xml'],
+    ['uri', 'text/uri-list'],
+    ['uris', 'text/uri-list'],
+    ['ustar', ['application/x-ustar', 'multipart/x-ustar']],
+    ['utz', 'application/vnd.uiq.theme'],
+    ['uu', ['application/octet-stream', 'text/x-uuencode']],
+    ['uue', 'text/x-uuencode'],
+    ['uva', 'audio/vnd.dece.audio'],
+    ['uvh', 'video/vnd.dece.hd'],
+    ['uvi', 'image/vnd.dece.graphic'],
+    ['uvm', 'video/vnd.dece.mobile'],
+    ['uvp', 'video/vnd.dece.pd'],
+    ['uvs', 'video/vnd.dece.sd'],
+    ['uvu', 'video/vnd.uvvu.mp4'],
+    ['uvv', 'video/vnd.dece.video'],
+    ['vcd', 'application/x-cdlink'],
+    ['vcf', 'text/x-vcard'],
+    ['vcg', 'application/vnd.groove-vcard'],
+    ['vcs', 'text/x-vcalendar'],
+    ['vcx', 'application/vnd.vcx'],
+    ['vda', 'application/vda'],
+    ['vdo', 'video/vdo'],
+    ['vew', 'application/groupwise'],
+    ['vis', 'application/vnd.visionary'],
+    ['viv', ['video/vivo', 'video/vnd.vivo']],
+    ['vivo', ['video/vivo', 'video/vnd.vivo']],
+    ['vmd', 'application/vocaltec-media-desc'],
+    ['vmf', 'application/vocaltec-media-file'],
+    ['voc', ['audio/voc', 'audio/x-voc']],
+    ['vos', 'video/vosaic'],
+    ['vox', 'audio/voxware'],
+    ['vqe', 'audio/x-twinvq-plugin'],
+    ['vqf', 'audio/x-twinvq'],
+    ['vql', 'audio/x-twinvq-plugin'],
+    ['vrml', ['model/vrml', 'x-world/x-vrml', 'application/x-vrml']],
+    ['vrt', 'x-world/x-vrt'],
+    ['vsd', ['application/vnd.visio', 'application/x-visio']],
+    ['vsf', 'application/vnd.vsf'],
+    ['vst', 'application/x-visio'],
+    ['vsw', 'application/x-visio'],
+    ['vtu', 'model/vnd.vtu'],
+    ['vxml', 'application/voicexml+xml'],
+    ['w60', 'application/wordperfect6.0'],
+    ['w61', 'application/wordperfect6.1'],
+    ['w6w', 'application/msword'],
+    ['wad', 'application/x-doom'],
+    ['wav', ['audio/wav', 'audio/x-wav']],
+    ['wax', 'audio/x-ms-wax'],
+    ['wb1', 'application/x-qpro'],
+    ['wbmp', 'image/vnd.wap.wbmp'],
+    ['wbs', 'application/vnd.criticaltools.wbs+xml'],
+    ['wbxml', 'application/vnd.wap.wbxml'],
+    ['wcm', 'application/vnd.ms-works'],
+    ['wdb', 'application/vnd.ms-works'],
+    ['web', 'application/vnd.xara'],
+    ['weba', 'audio/webm'],
+    ['webm', 'video/webm'],
+    ['webp', 'image/webp'],
+    ['wg', 'application/vnd.pmi.widget'],
+    ['wgt', 'application/widget'],
+    ['wiz', 'application/msword'],
+    ['wk1', 'application/x-123'],
+    ['wks', 'application/vnd.ms-works'],
+    ['wm', 'video/x-ms-wm'],
+    ['wma', 'audio/x-ms-wma'],
+    ['wmd', 'application/x-ms-wmd'],
+    ['wmf', ['windows/metafile', 'application/x-msmetafile']],
+    ['wml', 'text/vnd.wap.wml'],
+    ['wmlc', 'application/vnd.wap.wmlc'],
+    ['wmls', 'text/vnd.wap.wmlscript'],
+    ['wmlsc', 'application/vnd.wap.wmlscriptc'],
+    ['wmv', 'video/x-ms-wmv'],
+    ['wmx', 'video/x-ms-wmx'],
+    ['wmz', 'application/x-ms-wmz'],
+    ['woff', 'application/x-font-woff'],
+    ['word', 'application/msword'],
+    ['wp', 'application/wordperfect'],
+    ['wp5', ['application/wordperfect', 'application/wordperfect6.0']],
+    ['wp6', 'application/wordperfect'],
+    ['wpd', ['application/wordperfect', 'application/vnd.wordperfect', 'application/x-wpwin']],
+    ['wpl', 'application/vnd.ms-wpl'],
+    ['wps', 'application/vnd.ms-works'],
+    ['wq1', 'application/x-lotus'],
+    ['wqd', 'application/vnd.wqd'],
+    ['wri', ['application/mswrite', 'application/x-wri', 'application/x-mswrite']],
+    ['wrl', ['model/vrml', 'x-world/x-vrml', 'application/x-world']],
+    ['wrz', ['model/vrml', 'x-world/x-vrml']],
+    ['wsc', 'text/scriplet'],
+    ['wsdl', 'application/wsdl+xml'],
+    ['wspolicy', 'application/wspolicy+xml'],
+    ['wsrc', 'application/x-wais-source'],
+    ['wtb', 'application/vnd.webturbo'],
+    ['wtk', 'application/x-wintalk'],
+    ['wvx', 'video/x-ms-wvx'],
+    ['x-png', 'image/png'],
+    ['x3d', 'application/vnd.hzn-3d-crossword'],
+    ['xaf', 'x-world/x-vrml'],
+    ['xap', 'application/x-silverlight-app'],
+    ['xar', 'application/vnd.xara'],
+    ['xbap', 'application/x-ms-xbap'],
+    ['xbd', 'application/vnd.fujixerox.docuworks.binder'],
+    ['xbm', ['image/xbm', 'image/x-xbm', 'image/x-xbitmap']],
+    ['xdf', 'application/xcap-diff+xml'],
+    ['xdm', 'application/vnd.syncml.dm+xml'],
+    ['xdp', 'application/vnd.adobe.xdp+xml'],
+    ['xdr', 'video/x-amt-demorun'],
+    ['xdssc', 'application/dssc+xml'],
+    ['xdw', 'application/vnd.fujixerox.docuworks'],
+    ['xenc', 'application/xenc+xml'],
+    ['xer', 'application/patch-ops-error+xml'],
+    ['xfdf', 'application/vnd.adobe.xfdf'],
+    ['xfdl', 'application/vnd.xfdl'],
+    ['xgz', 'xgl/drawing'],
+    ['xhtml', 'application/xhtml+xml'],
+    ['xif', 'image/vnd.xiff'],
+    ['xl', 'application/excel'],
+    ['xla', ['application/vnd.ms-excel', 'application/excel', 'application/x-msexcel', 'application/x-excel']],
+    ['xlam', 'application/vnd.ms-excel.addin.macroenabled.12'],
+    ['xlb', ['application/excel', 'application/vnd.ms-excel', 'application/x-excel']],
+    ['xlc', ['application/vnd.ms-excel', 'application/excel', 'application/x-excel']],
+    ['xld', ['application/excel', 'application/x-excel']],
+    ['xlk', ['application/excel', 'application/x-excel']],
+    ['xll', ['application/excel', 'application/vnd.ms-excel', 'application/x-excel']],
+    ['xlm', ['application/vnd.ms-excel', 'application/excel', 'application/x-excel']],
+    ['xls', ['application/vnd.ms-excel', 'application/excel', 'application/x-msexcel', 'application/x-excel']],
+    ['xlsb', 'application/vnd.ms-excel.sheet.binary.macroenabled.12'],
+    ['xlsm', 'application/vnd.ms-excel.sheet.macroenabled.12'],
+    ['xlsx', 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'],
+    ['xlt', ['application/vnd.ms-excel', 'application/excel', 'application/x-excel']],
+    ['xltm', 'application/vnd.ms-excel.template.macroenabled.12'],
+    ['xltx', 'application/vnd.openxmlformats-officedocument.spreadsheetml.template'],
+    ['xlv', ['application/excel', 'application/x-excel']],
+    ['xlw', ['application/vnd.ms-excel', 'application/excel', 'application/x-msexcel', 'application/x-excel']],
+    ['xm', 'audio/xm'],
+    ['xml', ['application/xml', 'text/xml', 'application/atom+xml', 'application/rss+xml']],
+    ['xmz', 'xgl/movie'],
+    ['xo', 'application/vnd.olpc-sugar'],
+    ['xof', 'x-world/x-vrml'],
+    ['xop', 'application/xop+xml'],
+    ['xpi', 'application/x-xpinstall'],
+    ['xpix', 'application/x-vnd.ls-xpix'],
+    ['xpm', ['image/xpm', 'image/x-xpixmap']],
+    ['xpr', 'application/vnd.is-xpr'],
+    ['xps', 'application/vnd.ms-xpsdocument'],
+    ['xpw', 'application/vnd.intercon.formnet'],
+    ['xslt', 'application/xslt+xml'],
+    ['xsm', 'application/vnd.syncml+xml'],
+    ['xspf', 'application/xspf+xml'],
+    ['xsr', 'video/x-amt-showrun'],
+    ['xul', 'application/vnd.mozilla.xul+xml'],
+    ['xwd', ['image/x-xwd', 'image/x-xwindowdump']],
+    ['xyz', ['chemical/x-xyz', 'chemical/x-pdb']],
+    ['yang', 'application/yang'],
+    ['yin', 'application/yin+xml'],
+    ['z', ['application/x-compressed', 'application/x-compress']],
+    ['zaz', 'application/vnd.zzazz.deck+xml'],
+    ['zip', ['application/zip', 'multipart/x-zip', 'application/x-zip-compressed', 'application/x-compressed']],
+    ['zir', 'application/vnd.zul'],
+    ['zmm', 'application/vnd.handheld-entertainment+xml'],
+    ['zoo', 'application/octet-stream'],
+    ['zsh', 'text/x-script.zsh']
+]);
+
+module.exports = {
+    detectMimeType(filename) {
+        if (!filename) {
+            return defaultMimeType;
+        }
+
+        let parsed = path.parse(filename);
+        let extension = (parsed.ext.substr(1) || parsed.name || '')
+            .split('?')
+            .shift()
+            .trim()
+            .toLowerCase();
+        let value = defaultMimeType;
+
+        if (extensions.has(extension)) {
+            value = extensions.get(extension);
+        }
+
+        if (Array.isArray(value)) {
+            return value[0];
+        }
+        return value;
+    },
+
+    detectExtension(mimeType) {
+        if (!mimeType) {
+            return defaultExtension;
+        }
+        let parts = (mimeType || '')
+            .toLowerCase()
+            .trim()
+            .split('/');
+        let rootType = parts.shift().trim();
+        let subType = parts.join('/').trim();
+
+        if (mimeTypes.has(rootType + '/' + subType)) {
+            let value = mimeTypes.get(rootType + '/' + subType);
+            if (Array.isArray(value)) {
+                return value[0];
+            }
+            return value;
+        }
+
+        switch (rootType) {
+            case 'text':
+                return 'txt';
+            default:
+                return 'bin';
+        }
+    }
+};
diff --git a/server/node_modules/nodemailer/lib/mime-node/index.js b/server/node_modules/nodemailer/lib/mime-node/index.js
new file mode 100644
index 0000000..60fa987
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mime-node/index.js
@@ -0,0 +1,1247 @@
+/* eslint no-undefined: 0, prefer-spread: 0, no-control-regex: 0 */
+
+'use strict';
+
+const crypto = require('crypto');
+const os = require('os');
+const fs = require('fs');
+const punycode = require('punycode');
+const PassThrough = require('stream').PassThrough;
+const shared = require('../shared');
+
+const mimeFuncs = require('../mime-funcs');
+const qp = require('../qp');
+const base64 = require('../base64');
+const addressparser = require('../addressparser');
+const fetch = require('../fetch');
+const LastNewline = require('./last-newline');
+
+/**
+ * Creates a new mime tree node. Assumes 'multipart/*' as the content type
+ * if it is a branch, anything else counts as leaf. If rootNode is missing from
+ * the options, assumes this is the root.
+ *
+ * @param {String} contentType Define the content type for the node. Can be left blank for attachments (derived from filename)
+ * @param {Object} [options] optional options
+ * @param {Object} [options.rootNode] root node for this tree
+ * @param {Object} [options.parentNode] immediate parent for this node
+ * @param {Object} [options.filename] filename for an attachment node
+ * @param {String} [options.baseBoundary] shared part of the unique multipart boundary
+ * @param {Boolean} [options.keepBcc] If true, do not exclude Bcc from the generated headers
+ * @param {Function} [options.normalizeHeaderKey] method to normalize header keys for custom caseing
+ * @param {String} [options.textEncoding] either 'Q' (the default) or 'B'
+ */
+class MimeNode {
+    constructor(contentType, options) {
+        this.nodeCounter = 0;
+
+        options = options || {};
+
+        /**
+         * shared part of the unique multipart boundary
+         */
+        this.baseBoundary = options.baseBoundary || crypto.randomBytes(8).toString('hex');
+        this.boundaryPrefix = options.boundaryPrefix || '--_NmP';
+
+        this.disableFileAccess = !!options.disableFileAccess;
+        this.disableUrlAccess = !!options.disableUrlAccess;
+
+        this.normalizeHeaderKey = options.normalizeHeaderKey;
+
+        /**
+         * If date headers is missing and current node is the root, this value is used instead
+         */
+        this.date = new Date();
+
+        /**
+         * Root node for current mime tree
+         */
+        this.rootNode = options.rootNode || this;
+
+        /**
+         * If true include Bcc in generated headers (if available)
+         */
+        this.keepBcc = !!options.keepBcc;
+
+        /**
+         * If filename is specified but contentType is not (probably an attachment)
+         * detect the content type from filename extension
+         */
+        if (options.filename) {
+            /**
+             * Filename for this node. Useful with attachments
+             */
+            this.filename = options.filename;
+            if (!contentType) {
+                contentType = mimeFuncs.detectMimeType(this.filename.split('.').pop());
+            }
+        }
+
+        /**
+         * Indicates which encoding should be used for header strings: "Q" or "B"
+         */
+        this.textEncoding = (options.textEncoding || '').toString().trim().charAt(0).toUpperCase();
+
+        /**
+         * Immediate parent for this node (or undefined if not set)
+         */
+        this.parentNode = options.parentNode;
+
+        /**
+         * Hostname for default message-id values
+         */
+        this.hostname = options.hostname;
+
+        /**
+         * An array for possible child nodes
+         */
+        this.childNodes = [];
+
+        /**
+         * Used for generating unique boundaries (prepended to the shared base)
+         */
+        this._nodeId = ++this.rootNode.nodeCounter;
+
+        /**
+         * A list of header values for this node in the form of [{key:'', value:''}]
+         */
+        this._headers = [];
+
+        /**
+         * True if the content only uses ASCII printable characters
+         * @type {Boolean}
+         */
+        this._isPlainText = false;
+
+        /**
+         * True if the content is plain text but has longer lines than allowed
+         * @type {Boolean}
+         */
+        this._hasLongLines = false;
+
+        /**
+         * If set, use instead this value for envelopes instead of generating one
+         * @type {Boolean}
+         */
+        this._envelope = false;
+
+        /**
+         * If set then use this value as the stream content instead of building it
+         * @type {String|Buffer|Stream}
+         */
+        this._raw = false;
+
+        /**
+         * Additional transform streams that the message will be piped before
+         * exposing by createReadStream
+         * @type {Array}
+         */
+        this._transforms = [];
+
+        /**
+         * Additional process functions that the message will be piped through before
+         * exposing by createReadStream. These functions are run after transforms
+         * @type {Array}
+         */
+        this._processFuncs = [];
+
+        /**
+         * If content type is set (or derived from the filename) add it to headers
+         */
+        if (contentType) {
+            this.setHeader('Content-Type', contentType);
+        }
+    }
+
+    /////// PUBLIC METHODS
+
+    /**
+     * Creates and appends a child node.Arguments provided are passed to MimeNode constructor
+     *
+     * @param {String} [contentType] Optional content type
+     * @param {Object} [options] Optional options object
+     * @return {Object} Created node object
+     */
+    createChild(contentType, options) {
+        if (!options && typeof contentType === 'object') {
+            options = contentType;
+            contentType = undefined;
+        }
+        let node = new MimeNode(contentType, options);
+        this.appendChild(node);
+        return node;
+    }
+
+    /**
+     * Appends an existing node to the mime tree. Removes the node from an existing
+     * tree if needed
+     *
+     * @param {Object} childNode node to be appended
+     * @return {Object} Appended node object
+     */
+    appendChild(childNode) {
+        if (childNode.rootNode !== this.rootNode) {
+            childNode.rootNode = this.rootNode;
+            childNode._nodeId = ++this.rootNode.nodeCounter;
+        }
+
+        childNode.parentNode = this;
+
+        this.childNodes.push(childNode);
+        return childNode;
+    }
+
+    /**
+     * Replaces current node with another node
+     *
+     * @param {Object} node Replacement node
+     * @return {Object} Replacement node
+     */
+    replace(node) {
+        if (node === this) {
+            return this;
+        }
+
+        this.parentNode.childNodes.forEach((childNode, i) => {
+            if (childNode === this) {
+                node.rootNode = this.rootNode;
+                node.parentNode = this.parentNode;
+                node._nodeId = this._nodeId;
+
+                this.rootNode = this;
+                this.parentNode = undefined;
+
+                node.parentNode.childNodes[i] = node;
+            }
+        });
+
+        return node;
+    }
+
+    /**
+     * Removes current node from the mime tree
+     *
+     * @return {Object} removed node
+     */
+    remove() {
+        if (!this.parentNode) {
+            return this;
+        }
+
+        for (let i = this.parentNode.childNodes.length - 1; i >= 0; i--) {
+            if (this.parentNode.childNodes[i] === this) {
+                this.parentNode.childNodes.splice(i, 1);
+                this.parentNode = undefined;
+                this.rootNode = this;
+                return this;
+            }
+        }
+    }
+
+    /**
+     * Sets a header value. If the value for selected key exists, it is overwritten.
+     * You can set multiple values as well by using [{key:'', value:''}] or
+     * {key: 'value'} as the first argument.
+     *
+     * @param {String|Array|Object} key Header key or a list of key value pairs
+     * @param {String} value Header value
+     * @return {Object} current node
+     */
+    setHeader(key, value) {
+        let added = false,
+            headerValue;
+
+        // Allow setting multiple headers at once
+        if (!value && key && typeof key === 'object') {
+            // allow {key:'content-type', value: 'text/plain'}
+            if (key.key && 'value' in key) {
+                this.setHeader(key.key, key.value);
+            } else if (Array.isArray(key)) {
+                // allow [{key:'content-type', value: 'text/plain'}]
+                key.forEach(i => {
+                    this.setHeader(i.key, i.value);
+                });
+            } else {
+                // allow {'content-type': 'text/plain'}
+                Object.keys(key).forEach(i => {
+                    this.setHeader(i, key[i]);
+                });
+            }
+            return this;
+        }
+
+        key = this._normalizeHeaderKey(key);
+
+        headerValue = {
+            key,
+            value
+        };
+
+        // Check if the value exists and overwrite
+        for (let i = 0, len = this._headers.length; i < len; i++) {
+            if (this._headers[i].key === key) {
+                if (!added) {
+                    // replace the first match
+                    this._headers[i] = headerValue;
+                    added = true;
+                } else {
+                    // remove following matches
+                    this._headers.splice(i, 1);
+                    i--;
+                    len--;
+                }
+            }
+        }
+
+        // match not found, append the value
+        if (!added) {
+            this._headers.push(headerValue);
+        }
+
+        return this;
+    }
+
+    /**
+     * Adds a header value. If the value for selected key exists, the value is appended
+     * as a new field and old one is not touched.
+     * You can set multiple values as well by using [{key:'', value:''}] or
+     * {key: 'value'} as the first argument.
+     *
+     * @param {String|Array|Object} key Header key or a list of key value pairs
+     * @param {String} value Header value
+     * @return {Object} current node
+     */
+    addHeader(key, value) {
+        // Allow setting multiple headers at once
+        if (!value && key && typeof key === 'object') {
+            // allow {key:'content-type', value: 'text/plain'}
+            if (key.key && key.value) {
+                this.addHeader(key.key, key.value);
+            } else if (Array.isArray(key)) {
+                // allow [{key:'content-type', value: 'text/plain'}]
+                key.forEach(i => {
+                    this.addHeader(i.key, i.value);
+                });
+            } else {
+                // allow {'content-type': 'text/plain'}
+                Object.keys(key).forEach(i => {
+                    this.addHeader(i, key[i]);
+                });
+            }
+            return this;
+        } else if (Array.isArray(value)) {
+            value.forEach(val => {
+                this.addHeader(key, val);
+            });
+            return this;
+        }
+
+        this._headers.push({
+            key: this._normalizeHeaderKey(key),
+            value
+        });
+
+        return this;
+    }
+
+    /**
+     * Retrieves the first mathcing value of a selected key
+     *
+     * @param {String} key Key to search for
+     * @retun {String} Value for the key
+     */
+    getHeader(key) {
+        key = this._normalizeHeaderKey(key);
+        for (let i = 0, len = this._headers.length; i < len; i++) {
+            if (this._headers[i].key === key) {
+                return this._headers[i].value;
+            }
+        }
+    }
+
+    /**
+     * Sets body content for current node. If the value is a string, charset is added automatically
+     * to Content-Type (if it is text/*). If the value is a Buffer, you need to specify
+     * the charset yourself
+     *
+     * @param (String|Buffer) content Body content
+     * @return {Object} current node
+     */
+    setContent(content) {
+        this.content = content;
+        if (typeof this.content.pipe === 'function') {
+            // pre-stream handler. might be triggered if a stream is set as content
+            // and 'error' fires before anything is done with this stream
+            this._contentErrorHandler = err => {
+                this.content.removeListener('error', this._contentErrorHandler);
+                this.content = err;
+            };
+            this.content.once('error', this._contentErrorHandler);
+        } else if (typeof this.content === 'string') {
+            this._isPlainText = mimeFuncs.isPlainText(this.content);
+            if (this._isPlainText && mimeFuncs.hasLongerLines(this.content, 76)) {
+                // If there are lines longer than 76 symbols/bytes do not use 7bit
+                this._hasLongLines = true;
+            }
+        }
+        return this;
+    }
+
+    build(callback) {
+        let promise;
+
+        if (!callback) {
+            promise = new Promise((resolve, reject) => {
+                callback = shared.callbackPromise(resolve, reject);
+            });
+        }
+
+        let stream = this.createReadStream();
+        let buf = [];
+        let buflen = 0;
+        let returned = false;
+
+        stream.on('readable', () => {
+            let chunk;
+
+            while ((chunk = stream.read()) !== null) {
+                buf.push(chunk);
+                buflen += chunk.length;
+            }
+        });
+
+        stream.once('error', err => {
+            if (returned) {
+                return;
+            }
+            returned = true;
+
+            return callback(err);
+        });
+
+        stream.once('end', chunk => {
+            if (returned) {
+                return;
+            }
+            returned = true;
+
+            if (chunk && chunk.length) {
+                buf.push(chunk);
+                buflen += chunk.length;
+            }
+            return callback(null, Buffer.concat(buf, buflen));
+        });
+
+        return promise;
+    }
+
+    getTransferEncoding() {
+        let transferEncoding = false;
+        let contentType = (this.getHeader('Content-Type') || '').toString().toLowerCase().trim();
+
+        if (this.content) {
+            transferEncoding = (this.getHeader('Content-Transfer-Encoding') || '').toString().toLowerCase().trim();
+            if (!transferEncoding || !['base64', 'quoted-printable'].includes(transferEncoding)) {
+                if (/^text\//i.test(contentType)) {
+                    // If there are no special symbols, no need to modify the text
+                    if (this._isPlainText && !this._hasLongLines) {
+                        transferEncoding = '7bit';
+                    } else if (typeof this.content === 'string' || this.content instanceof Buffer) {
+                        // detect preferred encoding for string value
+                        transferEncoding = this._getTextEncoding(this.content) === 'Q' ? 'quoted-printable' : 'base64';
+                    } else {
+                        // we can not check content for a stream, so either use preferred encoding or fallback to QP
+                        transferEncoding = this.transferEncoding === 'B' ? 'base64' : 'quoted-printable';
+                    }
+                } else if (!/^(multipart|message)\//i.test(contentType)) {
+                    transferEncoding = transferEncoding || 'base64';
+                }
+            }
+        }
+        return transferEncoding;
+    }
+
+    /**
+     * Builds the header block for the mime node. Append \r\n\r\n before writing the content
+     *
+     * @returns {String} Headers
+     */
+    buildHeaders() {
+        let transferEncoding = this.getTransferEncoding();
+        let headers = [];
+
+        if (transferEncoding) {
+            this.setHeader('Content-Transfer-Encoding', transferEncoding);
+        }
+
+        if (this.filename && !this.getHeader('Content-Disposition')) {
+            this.setHeader('Content-Disposition', 'attachment');
+        }
+
+        // Ensure mandatory header fields
+        if (this.rootNode === this) {
+            if (!this.getHeader('Date')) {
+                this.setHeader('Date', this.date.toUTCString().replace(/GMT/, '+0000'));
+            }
+
+            // ensure that Message-Id is present
+            this.messageId();
+
+            if (!this.getHeader('MIME-Version')) {
+                this.setHeader('MIME-Version', '1.0');
+            }
+        }
+
+        this._headers.forEach(header => {
+            let key = header.key;
+            let value = header.value;
+            let structured;
+            let param;
+            let options = {};
+            let formattedHeaders = ['From', 'Sender', 'To', 'Cc', 'Bcc', 'Reply-To', 'Date', 'References'];
+
+            if (value && typeof value === 'object' && !formattedHeaders.includes(key)) {
+                Object.keys(value).forEach(key => {
+                    if (key !== 'value') {
+                        options[key] = value[key];
+                    }
+                });
+                value = (value.value || '').toString();
+                if (!value.trim()) {
+                    return;
+                }
+            }
+
+            if (options.prepared) {
+                // header value is
+                if (options.foldLines) {
+                    headers.push(mimeFuncs.foldLines(key + ': ' + value));
+                } else {
+                    headers.push(key + ': ' + value);
+                }
+                return;
+            }
+
+            switch (header.key) {
+                case 'Content-Disposition':
+                    structured = mimeFuncs.parseHeaderValue(value);
+                    if (this.filename) {
+                        structured.params.filename = this.filename;
+                    }
+                    value = mimeFuncs.buildHeaderValue(structured);
+                    break;
+                case 'Content-Type':
+                    structured = mimeFuncs.parseHeaderValue(value);
+
+                    this._handleContentType(structured);
+
+                    if (structured.value.match(/^text\/plain\b/) && typeof this.content === 'string' && /[\u0080-\uFFFF]/.test(this.content)) {
+                        structured.params.charset = 'utf-8';
+                    }
+
+                    value = mimeFuncs.buildHeaderValue(structured);
+
+                    if (this.filename) {
+                        // add support for non-compliant clients like QQ webmail
+                        // we can't build the value with buildHeaderValue as the value is non standard and
+                        // would be converted to parameter continuation encoding that we do not want
+                        param = this._encodeWords(this.filename);
+
+                        if (param !== this.filename || /[\s'"\\;:/=(),<>@[\]?]|^-/.test(param)) {
+                            // include value in quotes if needed
+                            param = '"' + param + '"';
+                        }
+                        value += '; name=' + param;
+                    }
+                    break;
+                case 'Bcc':
+                    if (!this.keepBcc) {
+                        // skip BCC values
+                        return;
+                    }
+                    break;
+            }
+
+            value = this._encodeHeaderValue(key, value);
+
+            // skip empty lines
+            if (!(value || '').toString().trim()) {
+                return;
+            }
+
+            if (typeof this.normalizeHeaderKey === 'function') {
+                let normalized = this.normalizeHeaderKey(key, value);
+                if (normalized && typeof normalized === 'string' && normalized.length) {
+                    key = normalized;
+                }
+            }
+
+            headers.push(mimeFuncs.foldLines(key + ': ' + value, 76));
+        });
+
+        return headers.join('\r\n');
+    }
+
+    /**
+     * Streams the rfc2822 message from the current node. If this is a root node,
+     * mandatory header fields are set if missing (Date, Message-Id, MIME-Version)
+     *
+     * @return {String} Compiled message
+     */
+    createReadStream(options) {
+        options = options || {};
+
+        let stream = new PassThrough(options);
+        let outputStream = stream;
+        let transform;
+
+        this.stream(stream, options, err => {
+            if (err) {
+                outputStream.emit('error', err);
+                return;
+            }
+            stream.end();
+        });
+
+        for (let i = 0, len = this._transforms.length; i < len; i++) {
+            transform = typeof this._transforms[i] === 'function' ? this._transforms[i]() : this._transforms[i];
+            outputStream.once('error', err => {
+                transform.emit('error', err);
+            });
+            outputStream = outputStream.pipe(transform);
+        }
+
+        // ensure terminating newline after possible user transforms
+        transform = new LastNewline();
+        outputStream.once('error', err => {
+            transform.emit('error', err);
+        });
+        outputStream = outputStream.pipe(transform);
+
+        // dkim and stuff
+        for (let i = 0, len = this._processFuncs.length; i < len; i++) {
+            transform = this._processFuncs[i];
+            outputStream = transform(outputStream);
+        }
+
+        return outputStream;
+    }
+
+    /**
+     * Appends a transform stream object to the transforms list. Final output
+     * is passed through this stream before exposing
+     *
+     * @param {Object} transform Read-Write stream
+     */
+    transform(transform) {
+        this._transforms.push(transform);
+    }
+
+    /**
+     * Appends a post process function. The functon is run after transforms and
+     * uses the following syntax
+     *
+     *   processFunc(input) -> outputStream
+     *
+     * @param {Object} processFunc Read-Write stream
+     */
+    processFunc(processFunc) {
+        this._processFuncs.push(processFunc);
+    }
+
+    stream(outputStream, options, done) {
+        let transferEncoding = this.getTransferEncoding();
+        let contentStream;
+        let localStream;
+
+        // protect actual callback against multiple triggering
+        let returned = false;
+        let callback = err => {
+            if (returned) {
+                return;
+            }
+            returned = true;
+            done(err);
+        };
+
+        // for multipart nodes, push child nodes
+        // for content nodes end the stream
+        let finalize = () => {
+            let childId = 0;
+            let processChildNode = () => {
+                if (childId >= this.childNodes.length) {
+                    outputStream.write('\r\n--' + this.boundary + '--\r\n');
+                    return callback();
+                }
+                let child = this.childNodes[childId++];
+                outputStream.write((childId > 1 ? '\r\n' : '') + '--' + this.boundary + '\r\n');
+                child.stream(outputStream, options, err => {
+                    if (err) {
+                        return callback(err);
+                    }
+                    setImmediate(processChildNode);
+                });
+            };
+
+            if (this.multipart) {
+                setImmediate(processChildNode);
+            } else {
+                return callback();
+            }
+        };
+
+        // pushes node content
+        let sendContent = () => {
+            if (this.content) {
+                if (Object.prototype.toString.call(this.content) === '[object Error]') {
+                    // content is already errored
+                    return callback(this.content);
+                }
+
+                if (typeof this.content.pipe === 'function') {
+                    this.content.removeListener('error', this._contentErrorHandler);
+                    this._contentErrorHandler = err => callback(err);
+                    this.content.once('error', this._contentErrorHandler);
+                }
+
+                let createStream = () => {
+                    if (['quoted-printable', 'base64'].includes(transferEncoding)) {
+                        contentStream = new (transferEncoding === 'base64' ? base64 : qp).Encoder(options);
+
+                        contentStream.pipe(outputStream, {
+                            end: false
+                        });
+                        contentStream.once('end', finalize);
+                        contentStream.once('error', err => callback(err));
+
+                        localStream = this._getStream(this.content);
+                        localStream.pipe(contentStream);
+                    } else {
+                        // anything that is not QP or Base54 passes as-is
+                        localStream = this._getStream(this.content);
+                        localStream.pipe(outputStream, {
+                            end: false
+                        });
+                        localStream.once('end', finalize);
+                    }
+
+                    localStream.once('error', err => callback(err));
+                };
+
+                if (this.content._resolve) {
+                    let chunks = [];
+                    let chunklen = 0;
+                    let returned = false;
+                    let sourceStream = this._getStream(this.content);
+                    sourceStream.on('error', err => {
+                        if (returned) {
+                            return;
+                        }
+                        returned = true;
+                        callback(err);
+                    });
+                    sourceStream.on('readable', () => {
+                        let chunk;
+                        while ((chunk = sourceStream.read()) !== null) {
+                            chunks.push(chunk);
+                            chunklen += chunk.length;
+                        }
+                    });
+                    sourceStream.on('end', () => {
+                        if (returned) {
+                            return;
+                        }
+                        returned = true;
+                        this.content._resolve = false;
+                        this.content._resolvedValue = Buffer.concat(chunks, chunklen);
+                        setImmediate(createStream);
+                    });
+                } else {
+                    setImmediate(createStream);
+                }
+                return;
+            } else {
+                return setImmediate(finalize);
+            }
+        };
+
+        if (this._raw) {
+            setImmediate(() => {
+                if (Object.prototype.toString.call(this._raw) === '[object Error]') {
+                    // content is already errored
+                    return callback(this._raw);
+                }
+
+                // remove default error handler (if set)
+                if (typeof this._raw.pipe === 'function') {
+                    this._raw.removeListener('error', this._contentErrorHandler);
+                }
+
+                let raw = this._getStream(this._raw);
+                raw.pipe(outputStream, {
+                    end: false
+                });
+                raw.on('error', err => outputStream.emit('error', err));
+                raw.on('end', finalize);
+            });
+        } else {
+            outputStream.write(this.buildHeaders() + '\r\n\r\n');
+            setImmediate(sendContent);
+        }
+    }
+
+    /**
+     * Sets envelope to be used instead of the generated one
+     *
+     * @return {Object} SMTP envelope in the form of {from: 'from@example.com', to: ['to@example.com']}
+     */
+    setEnvelope(envelope) {
+        let list;
+
+        this._envelope = {
+            from: false,
+            to: []
+        };
+
+        if (envelope.from) {
+            list = [];
+            this._convertAddresses(this._parseAddresses(envelope.from), list);
+            list = list.filter(address => address && address.address);
+            if (list.length && list[0]) {
+                this._envelope.from = list[0].address;
+            }
+        }
+        ['to', 'cc', 'bcc'].forEach(key => {
+            if (envelope[key]) {
+                this._convertAddresses(this._parseAddresses(envelope[key]), this._envelope.to);
+            }
+        });
+
+        this._envelope.to = this._envelope.to.map(to => to.address).filter(address => address);
+
+        let standardFields = ['to', 'cc', 'bcc', 'from'];
+        Object.keys(envelope).forEach(key => {
+            if (!standardFields.includes(key)) {
+                this._envelope[key] = envelope[key];
+            }
+        });
+
+        return this;
+    }
+
+    /**
+     * Generates and returns an object with parsed address fields
+     *
+     * @return {Object} Address object
+     */
+    getAddresses() {
+        let addresses = {};
+
+        this._headers.forEach(header => {
+            let key = header.key.toLowerCase();
+            if (['from', 'sender', 'reply-to', 'to', 'cc', 'bcc'].includes(key)) {
+                if (!Array.isArray(addresses[key])) {
+                    addresses[key] = [];
+                }
+
+                this._convertAddresses(this._parseAddresses(header.value), addresses[key]);
+            }
+        });
+
+        return addresses;
+    }
+
+    /**
+     * Generates and returns SMTP envelope with the sender address and a list of recipients addresses
+     *
+     * @return {Object} SMTP envelope in the form of {from: 'from@example.com', to: ['to@example.com']}
+     */
+    getEnvelope() {
+        if (this._envelope) {
+            return this._envelope;
+        }
+
+        let envelope = {
+            from: false,
+            to: []
+        };
+        this._headers.forEach(header => {
+            let list = [];
+            if (header.key === 'From' || (!envelope.from && ['Reply-To', 'Sender'].includes(header.key))) {
+                this._convertAddresses(this._parseAddresses(header.value), list);
+                if (list.length && list[0]) {
+                    envelope.from = list[0].address;
+                }
+            } else if (['To', 'Cc', 'Bcc'].includes(header.key)) {
+                this._convertAddresses(this._parseAddresses(header.value), envelope.to);
+            }
+        });
+
+        envelope.to = envelope.to.map(to => to.address);
+
+        return envelope;
+    }
+
+    /**
+     * Returns Message-Id value. If it does not exist, then creates one
+     *
+     * @return {String} Message-Id value
+     */
+    messageId() {
+        let messageId = this.getHeader('Message-ID');
+        // You really should define your own Message-Id field!
+        if (!messageId) {
+            messageId = this._generateMessageId();
+            this.setHeader('Message-ID', messageId);
+        }
+        return messageId;
+    }
+
+    /**
+     * Sets pregenerated content that will be used as the output of this node
+     *
+     * @param {String|Buffer|Stream} Raw MIME contents
+     */
+    setRaw(raw) {
+        this._raw = raw;
+
+        if (this._raw && typeof this._raw.pipe === 'function') {
+            // pre-stream handler. might be triggered if a stream is set as content
+            // and 'error' fires before anything is done with this stream
+            this._contentErrorHandler = err => {
+                this._raw.removeListener('error', this._contentErrorHandler);
+                this._raw = err;
+            };
+            this._raw.once('error', this._contentErrorHandler);
+        }
+
+        return this;
+    }
+
+    /////// PRIVATE METHODS
+
+    /**
+     * Detects and returns handle to a stream related with the content.
+     *
+     * @param {Mixed} content Node content
+     * @returns {Object} Stream object
+     */
+    _getStream(content) {
+        let contentStream;
+
+        if (content._resolvedValue) {
+            // pass string or buffer content as a stream
+            contentStream = new PassThrough();
+            setImmediate(() => contentStream.end(content._resolvedValue));
+            return contentStream;
+        } else if (typeof content.pipe === 'function') {
+            // assume as stream
+            return content;
+        } else if (content && typeof content.path === 'string' && !content.href) {
+            if (this.disableFileAccess) {
+                contentStream = new PassThrough();
+                setImmediate(() => contentStream.emit('error', new Error('File access rejected for ' + content.path)));
+                return contentStream;
+            }
+            // read file
+            return fs.createReadStream(content.path);
+        } else if (content && typeof content.href === 'string') {
+            if (this.disableUrlAccess) {
+                contentStream = new PassThrough();
+                setImmediate(() => contentStream.emit('error', new Error('Url access rejected for ' + content.href)));
+                return contentStream;
+            }
+            // fetch URL
+            return fetch(content.href, { headers: content.httpHeaders });
+        } else {
+            // pass string or buffer content as a stream
+            contentStream = new PassThrough();
+            setImmediate(() => contentStream.end(content || ''));
+            return contentStream;
+        }
+    }
+
+    /**
+     * Parses addresses. Takes in a single address or an array or an
+     * array of address arrays (eg. To: [[first group], [second group],...])
+     *
+     * @param {Mixed} addresses Addresses to be parsed
+     * @return {Array} An array of address objects
+     */
+    _parseAddresses(addresses) {
+        return [].concat.apply(
+            [],
+            [].concat(addresses).map(address => {
+                // eslint-disable-line prefer-spread
+                if (address && address.address) {
+                    address.address = this._normalizeAddress(address.address);
+                    address.name = address.name || '';
+                    return [address];
+                }
+                return addressparser(address);
+            })
+        );
+    }
+
+    /**
+     * Normalizes a header key, uses Camel-Case form, except for uppercase MIME-
+     *
+     * @param {String} key Key to be normalized
+     * @return {String} key in Camel-Case form
+     */
+    _normalizeHeaderKey(key) {
+        key = (key || '')
+            .toString()
+            // no newlines in keys
+            .replace(/\r?\n|\r/g, ' ')
+            .trim()
+            .toLowerCase()
+            // use uppercase words, except MIME
+            .replace(/^X-SMTPAPI$|^(MIME|DKIM)\b|^[a-z]|-(SPF|FBL|ID|MD5)$|-[a-z]/gi, c => c.toUpperCase())
+            // special case
+            .replace(/^Content-Features$/i, 'Content-features');
+
+        return key;
+    }
+
+    /**
+     * Checks if the content type is multipart and defines boundary if needed.
+     * Doesn't return anything, modifies object argument instead.
+     *
+     * @param {Object} structured Parsed header value for 'Content-Type' key
+     */
+    _handleContentType(structured) {
+        this.contentType = structured.value.trim().toLowerCase();
+
+        this.multipart = /^multipart\//i.test(this.contentType) ? this.contentType.substr(this.contentType.indexOf('/') + 1) : false;
+
+        if (this.multipart) {
+            this.boundary = structured.params.boundary = structured.params.boundary || this.boundary || this._generateBoundary();
+        } else {
+            this.boundary = false;
+        }
+    }
+
+    /**
+     * Generates a multipart boundary value
+     *
+     * @return {String} boundary value
+     */
+    _generateBoundary() {
+        return this.rootNode.boundaryPrefix + '-' + this.rootNode.baseBoundary + '-Part_' + this._nodeId;
+    }
+
+    /**
+     * Encodes a header value for use in the generated rfc2822 email.
+     *
+     * @param {String} key Header key
+     * @param {String} value Header value
+     */
+    _encodeHeaderValue(key, value) {
+        key = this._normalizeHeaderKey(key);
+
+        switch (key) {
+            // Structured headers
+            case 'From':
+            case 'Sender':
+            case 'To':
+            case 'Cc':
+            case 'Bcc':
+            case 'Reply-To':
+                return this._convertAddresses(this._parseAddresses(value));
+
+            // values enclosed in <>
+            case 'Message-ID':
+            case 'In-Reply-To':
+            case 'Content-Id':
+                value = (value || '').toString().replace(/\r?\n|\r/g, ' ');
+
+                if (value.charAt(0) !== '<') {
+                    value = '<' + value;
+                }
+
+                if (value.charAt(value.length - 1) !== '>') {
+                    value = value + '>';
+                }
+                return value;
+
+            // space separated list of values enclosed in <>
+            case 'References':
+                value = [].concat
+                    .apply(
+                        [],
+                        [].concat(value || '').map(elm => {
+                            // eslint-disable-line prefer-spread
+                            elm = (elm || '')
+                                .toString()
+                                .replace(/\r?\n|\r/g, ' ')
+                                .trim();
+                            return elm.replace(/<[^>]*>/g, str => str.replace(/\s/g, '')).split(/\s+/);
+                        })
+                    )
+                    .map(elm => {
+                        if (elm.charAt(0) !== '<') {
+                            elm = '<' + elm;
+                        }
+                        if (elm.charAt(elm.length - 1) !== '>') {
+                            elm = elm + '>';
+                        }
+                        return elm;
+                    });
+
+                return value.join(' ').trim();
+
+            case 'Date':
+                if (Object.prototype.toString.call(value) === '[object Date]') {
+                    return value.toUTCString().replace(/GMT/, '+0000');
+                }
+
+                value = (value || '').toString().replace(/\r?\n|\r/g, ' ');
+                return this._encodeWords(value);
+
+            default:
+                value = (value || '').toString().replace(/\r?\n|\r/g, ' ');
+                // encodeWords only encodes if needed, otherwise the original string is returned
+                return this._encodeWords(value);
+        }
+    }
+
+    /**
+     * Rebuilds address object using punycode and other adjustments
+     *
+     * @param {Array} addresses An array of address objects
+     * @param {Array} [uniqueList] An array to be populated with addresses
+     * @return {String} address string
+     */
+    _convertAddresses(addresses, uniqueList) {
+        let values = [];
+
+        uniqueList = uniqueList || [];
+
+        [].concat(addresses || []).forEach(address => {
+            if (address.address) {
+                address.address = this._normalizeAddress(address.address);
+
+                if (!address.name) {
+                    values.push(address.address);
+                } else if (address.name) {
+                    values.push(this._encodeAddressName(address.name) + ' <' + address.address + '>');
+                }
+
+                if (address.address) {
+                    if (!uniqueList.filter(a => a.address === address.address).length) {
+                        uniqueList.push(address);
+                    }
+                }
+            } else if (address.group) {
+                values.push(
+                    this._encodeAddressName(address.name) + ':' + (address.group.length ? this._convertAddresses(address.group, uniqueList) : '').trim() + ';'
+                );
+            }
+        });
+
+        return values.join(', ');
+    }
+
+    /**
+     * Normalizes an email address
+     *
+     * @param {Array} address An array of address objects
+     * @return {String} address string
+     */
+    _normalizeAddress(address) {
+        address = (address || '').toString().trim();
+
+        let lastAt = address.lastIndexOf('@');
+        if (lastAt < 0) {
+            // Bare username
+            return address;
+        }
+        let user = address.substr(0, lastAt);
+        let domain = address.substr(lastAt + 1);
+
+        // Usernames are not touched and are kept as is even if these include unicode
+        // Domains are punycoded by default
+        // 'jõgeva.ee' will be converted to 'xn--jgeva-dua.ee'
+        // non-unicode domains are left as is
+
+        return user + '@' + punycode.toASCII(domain.toLowerCase());
+    }
+
+    /**
+     * If needed, mime encodes the name part
+     *
+     * @param {String} name Name part of an address
+     * @returns {String} Mime word encoded string if needed
+     */
+    _encodeAddressName(name) {
+        if (!/^[\w ']*$/.test(name)) {
+            if (/^[\x20-\x7e]*$/.test(name)) {
+                return '"' + name.replace(/([\\"])/g, '\\$1') + '"';
+            } else {
+                return mimeFuncs.encodeWord(name, this._getTextEncoding(name), 52);
+            }
+        }
+        return name;
+    }
+
+    /**
+     * If needed, mime encodes the name part
+     *
+     * @param {String} name Name part of an address
+     * @returns {String} Mime word encoded string if needed
+     */
+    _encodeWords(value) {
+        // set encodeAll parameter to true even though it is against the recommendation of RFC2047,
+        // by default only words that include non-ascii should be converted into encoded words
+        // but some clients (eg. Zimbra) do not handle it properly and remove surrounding whitespace
+        return mimeFuncs.encodeWords(value, this._getTextEncoding(value), 52, true);
+    }
+
+    /**
+     * Detects best mime encoding for a text value
+     *
+     * @param {String} value Value to check for
+     * @return {String} either 'Q' or 'B'
+     */
+    _getTextEncoding(value) {
+        value = (value || '').toString();
+
+        let encoding = this.textEncoding;
+        let latinLen;
+        let nonLatinLen;
+
+        if (!encoding) {
+            // count latin alphabet symbols and 8-bit range symbols + control symbols
+            // if there are more latin characters, then use quoted-printable
+            // encoding, otherwise use base64
+            nonLatinLen = (value.match(/[\x00-\x08\x0B\x0C\x0E-\x1F\u0080-\uFFFF]/g) || []).length; // eslint-disable-line no-control-regex
+            latinLen = (value.match(/[a-z]/gi) || []).length;
+            // if there are more latin symbols than binary/unicode, then prefer Q, otherwise B
+            encoding = nonLatinLen < latinLen ? 'Q' : 'B';
+        }
+        return encoding;
+    }
+
+    /**
+     * Generates a message id
+     *
+     * @return {String} Random Message-ID value
+     */
+    _generateMessageId() {
+        return (
+            '<' +
+            [2, 2, 2, 6].reduce(
+                // crux to generate UUID-like random strings
+                (prev, len) => prev + '-' + crypto.randomBytes(len).toString('hex'),
+                crypto.randomBytes(4).toString('hex')
+            ) +
+            '@' +
+            // try to use the domain of the FROM address or fallback to server hostname
+            (this.getEnvelope().from || this.hostname || os.hostname() || 'localhost').split('@').pop() +
+            '>'
+        );
+    }
+}
+
+module.exports = MimeNode;
diff --git a/server/node_modules/nodemailer/lib/mime-node/last-newline.js b/server/node_modules/nodemailer/lib/mime-node/last-newline.js
new file mode 100644
index 0000000..5fcd057
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/mime-node/last-newline.js
@@ -0,0 +1,33 @@
+'use strict';
+
+const Transform = require('stream').Transform;
+
+class LastNewline extends Transform {
+    constructor() {
+        super();
+        this.lastByte = false;
+    }
+
+    _transform(chunk, encoding, done) {
+        if (chunk.length) {
+            this.lastByte = chunk[chunk.length - 1];
+        }
+
+        this.push(chunk);
+        done();
+    }
+
+    _flush(done) {
+        if (this.lastByte === 0x0a) {
+            return done();
+        }
+        if (this.lastByte === 0x0d) {
+            this.push(Buffer.from('\n'));
+            return done();
+        }
+        this.push(Buffer.from('\r\n'));
+        return done();
+    }
+}
+
+module.exports = LastNewline;
diff --git a/server/node_modules/nodemailer/lib/nodemailer.js b/server/node_modules/nodemailer/lib/nodemailer.js
new file mode 100644
index 0000000..85a7fa4
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/nodemailer.js
@@ -0,0 +1,148 @@
+'use strict';
+
+const Mailer = require('./mailer');
+const shared = require('./shared');
+const SMTPPool = require('./smtp-pool');
+const SMTPTransport = require('./smtp-transport');
+const SendmailTransport = require('./sendmail-transport');
+const StreamTransport = require('./stream-transport');
+const JSONTransport = require('./json-transport');
+const SESTransport = require('./ses-transport');
+const fetch = require('./fetch');
+const packageData = require('../package.json');
+
+const ETHEREAL_API = (process.env.ETHEREAL_API || 'https://api.nodemailer.com').replace(/\/+$/, '');
+const ETHEREAL_WEB = (process.env.ETHEREAL_WEB || 'https://ethereal.email').replace(/\/+$/, '');
+const ETHEREAL_CACHE = ['true', 'yes', 'y', '1'].includes(
+    (process.env.ETHEREAL_CACHE || 'yes')
+        .toString()
+        .trim()
+        .toLowerCase()
+);
+
+let testAccount = false;
+
+module.exports.createTransport = function(transporter, defaults) {
+    let urlConfig;
+    let options;
+    let mailer;
+
+    if (
+        // provided transporter is a configuration object, not transporter plugin
+        (typeof transporter === 'object' && typeof transporter.send !== 'function') ||
+        // provided transporter looks like a connection url
+        (typeof transporter === 'string' && /^(smtps?|direct):/i.test(transporter))
+    ) {
+        if ((urlConfig = typeof transporter === 'string' ? transporter : transporter.url)) {
+            // parse a configuration URL into configuration options
+            options = shared.parseConnectionUrl(urlConfig);
+        } else {
+            options = transporter;
+        }
+
+        if (options.pool) {
+            transporter = new SMTPPool(options);
+        } else if (options.sendmail) {
+            transporter = new SendmailTransport(options);
+        } else if (options.streamTransport) {
+            transporter = new StreamTransport(options);
+        } else if (options.jsonTransport) {
+            transporter = new JSONTransport(options);
+        } else if (options.SES) {
+            transporter = new SESTransport(options);
+        } else {
+            transporter = new SMTPTransport(options);
+        }
+    }
+
+    mailer = new Mailer(transporter, options, defaults);
+
+    return mailer;
+};
+
+module.exports.createTestAccount = function(apiUrl, callback) {
+    let promise;
+
+    if (!callback && typeof apiUrl === 'function') {
+        callback = apiUrl;
+        apiUrl = false;
+    }
+
+    if (!callback) {
+        promise = new Promise((resolve, reject) => {
+            callback = shared.callbackPromise(resolve, reject);
+        });
+    }
+
+    if (ETHEREAL_CACHE && testAccount) {
+        setImmediate(() => callback(null, testAccount));
+        return promise;
+    }
+
+    apiUrl = apiUrl || ETHEREAL_API;
+
+    let chunks = [];
+    let chunklen = 0;
+
+    let req = fetch(apiUrl + '/user', {
+        contentType: 'application/json',
+        method: 'POST',
+        body: Buffer.from(
+            JSON.stringify({
+                requestor: packageData.name,
+                version: packageData.version
+            })
+        )
+    });
+
+    req.on('readable', () => {
+        let chunk;
+        while ((chunk = req.read()) !== null) {
+            chunks.push(chunk);
+            chunklen += chunk.length;
+        }
+    });
+
+    req.once('error', err => callback(err));
+
+    req.once('end', () => {
+        let res = Buffer.concat(chunks, chunklen);
+        let data;
+        let err;
+        try {
+            data = JSON.parse(res.toString());
+        } catch (E) {
+            err = E;
+        }
+        if (err) {
+            return callback(err);
+        }
+        if (data.status !== 'success' || data.error) {
+            return callback(new Error(data.error || 'Request failed'));
+        }
+        delete data.status;
+        testAccount = data;
+        callback(null, testAccount);
+    });
+
+    return promise;
+};
+
+module.exports.getTestMessageUrl = function(info) {
+    if (!info || !info.response) {
+        return false;
+    }
+
+    let infoProps = new Map();
+    info.response.replace(/\[([^\]]+)\]$/, (m, props) => {
+        props.replace(/\b([A-Z0-9]+)=([^\s]+)/g, (m, key, value) => {
+            infoProps.set(key, value);
+        });
+    });
+
+    if (infoProps.has('STATUS') && infoProps.has('MSGID')) {
+        return (testAccount.web || ETHEREAL_WEB) + '/message/' + infoProps.get('MSGID');
+    }
+
+    return false;
+};
diff --git a/server/node_modules/nodemailer/lib/qp/index.js b/server/node_modules/nodemailer/lib/qp/index.js
new file mode 100644
index 0000000..e2e1ab8
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/qp/index.js
@@ -0,0 +1,219 @@
+'use strict';
+
+const Transform = require('stream').Transform;
+
+/**
+ * Encodes a Buffer into a Quoted-Printable encoded string
+ *
+ * @param {Buffer} buffer Buffer to convert
+ * @returns {String} Quoted-Printable encoded string
+ */
+function encode(buffer) {
+    if (typeof buffer === 'string') {
+        buffer = Buffer.from(buffer, 'utf-8');
+    }
+
+    // usable characters that do not need encoding
+    let ranges = [
+        // https://tools.ietf.org/html/rfc2045#section-6.7
+        [0x09], // <TAB>
+        [0x0a], // <LF>
+        [0x0d], // <CR>
+        [0x20, 0x3c], // <SP>!"#$%&'()*+,-./0123456789:;
+        [0x3e, 0x7e] // >?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}
+    ];
+    let result = '';
+    let ord;
+
+    for (let i = 0, len = buffer.length; i < len; i++) {
+        ord = buffer[i];
+        // if the char is in allowed range, then keep as is, unless it is a WS in the end of a line
+        if (checkRanges(ord, ranges) && !((ord === 0x20 || ord === 0x09) && (i === len - 1 || buffer[i + 1] === 0x0a || buffer[i + 1] === 0x0d))) {
+            result += String.fromCharCode(ord);
+            continue;
+        }
+        result += '=' + (ord < 0x10 ? '0' : '') + ord.toString(16).toUpperCase();
+    }
+
+    return result;
+}
+
+/**
+ * Adds soft line breaks to a Quoted-Printable string
+ *
+ * @param {String} str Quoted-Printable encoded string that might need line wrapping
+ * @param {Number} [lineLength=76] Maximum allowed length for a line
+ * @returns {String} Soft-wrapped Quoted-Printable encoded string
+ */
+function wrap(str, lineLength) {
+    str = (str || '').toString();
+    lineLength = lineLength || 76;
+
+    if (str.length <= lineLength) {
+        return str;
+    }
+
+    let pos = 0;
+    let len = str.length;
+    let match, code, line;
+    let lineMargin = Math.floor(lineLength / 3);
+    let result = '';
+
+    // insert soft linebreaks where needed
+    while (pos < len) {
+        line = str.substr(pos, lineLength);
+        if ((match = line.match(/\r\n/))) {
+            line = line.substr(0, match.index + match[0].length);
+            result += line;
+            pos += line.length;
+            continue;
+        }
+
+        if (line.substr(-1) === '\n') {
+            // nothing to change here
+            result += line;
+            pos += line.length;
+            continue;
+        } else if ((match = line.substr(-lineMargin).match(/\n.*?$/))) {
+            // truncate to nearest line break
+            line = line.substr(0, line.length - (match[0].length - 1));
+            result += line;
+            pos += line.length;
+            continue;
+        } else if (line.length > lineLength - lineMargin && (match = line.substr(-lineMargin).match(/[ \t.,!?][^ \t.,!?]*$/))) {
+            // truncate to nearest space
+            line = line.substr(0, line.length - (match[0].length - 1));
+        } else if (line.match(/[=][\da-f]{0,2}$/i)) {
+            // push incomplete encoding sequences to the next line
+            if ((match = line.match(/[=][\da-f]{0,1}$/i))) {
+                line = line.substr(0, line.length - match[0].length);
+            }
+
+            // ensure that utf-8 sequences are not split
+            while (line.length > 3 && line.length < len - pos && !line.match(/^(?:=[\da-f]{2}){1,4}$/i) && (match = line.match(/[=][\da-f]{2}$/gi))) {
+                code = parseInt(match[0].substr(1, 2), 16);
+                if (code < 128) {
+                    break;
+                }
+
+                line = line.substr(0, line.length - 3);
+
+                if (code >= 0xc0) {
+                    break;
+                }
+            }
+        }
+
+        if (pos + line.length < len && line.substr(-1) !== '\n') {
+            if (line.length === lineLength && line.match(/[=][\da-f]{2}$/i)) {
+                line = line.substr(0, line.length - 3);
+            } else if (line.length === lineLength) {
+                line = line.substr(0, line.length - 1);
+            }
+            pos += line.length;
+            line += '=\r\n';
+        } else {
+            pos += line.length;
+        }
+
+        result += line;
+    }
+
+    return result;
+}
+
+/**
+ * Helper function to check if a number is inside provided ranges
+ *
+ * @param {Number} nr Number to check for
+ * @param {Array} ranges An Array of allowed values
+ * @returns {Boolean} True if the value was found inside allowed ranges, false otherwise
+ */
+function checkRanges(nr, ranges) {
+    for (let i = ranges.length - 1; i >= 0; i--) {
+        if (!ranges[i].length) {
+            continue;
+        }
+        if (ranges[i].length === 1 && nr === ranges[i][0]) {
+            return true;
+        }
+        if (ranges[i].length === 2 && nr >= ranges[i][0] && nr <= ranges[i][1]) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Creates a transform stream for encoding data to Quoted-Printable encoding
+ *
+ * @constructor
+ * @param {Object} options Stream options
+ * @param {Number} [options.lineLength=76] Maximum lenght for lines, set to false to disable wrapping
+ */
+class Encoder extends Transform {
+    constructor(options) {
+        super();
+
+        // init Transform
+        this.options = options || {};
+
+        if (this.options.lineLength !== false) {
+            this.options.lineLength = this.options.lineLength || 76;
+        }
+
+        this._curLine = '';
+
+        this.inputBytes = 0;
+        this.outputBytes = 0;
+    }
+
+    _transform(chunk, encoding, done) {
+        let qp;
+
+        if (encoding !== 'buffer') {
+            chunk = Buffer.from(chunk, encoding);
+        }
+
+        if (!chunk || !chunk.length) {
+            return done();
+        }
+
+        this.inputBytes += chunk.length;
+
+        if (this.options.lineLength) {
+            qp = this._curLine + encode(chunk);
+            qp = wrap(qp, this.options.lineLength);
+            qp = qp.replace(/(^|\n)([^\n]*)$/, (match, lineBreak, lastLine) => {
+                this._curLine = lastLine;
+                return lineBreak;
+            });
+
+            if (qp) {
+                this.outputBytes += qp.length;
+                this.push(qp);
+            }
+        } else {
+            qp = encode(chunk);
+            this.outputBytes += qp.length;
+            this.push(qp, 'ascii');
+        }
+
+        done();
+    }
+
+    _flush(done) {
+        if (this._curLine) {
+            this.outputBytes += this._curLine.length;
+            this.push(this._curLine, 'ascii');
+        }
+        done();
+    }
+}
+
+// expose to the world
+module.exports = {
+    encode,
+    wrap,
+    Encoder
+};
diff --git a/server/node_modules/nodemailer/lib/sendmail-transport/index.js b/server/node_modules/nodemailer/lib/sendmail-transport/index.js
new file mode 100644
index 0000000..0e59221
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/sendmail-transport/index.js
@@ -0,0 +1,208 @@
+'use strict';
+
+const spawn = require('child_process').spawn;
+const packageData = require('../../package.json');
+const LeWindows = require('./le-windows');
+const LeUnix = require('./le-unix');
+const shared = require('../shared');
+
+/**
+ * Generates a Transport object for Sendmail
+ *
+ * Possible options can be the following:
+ *
+ *  * **path** optional path to sendmail binary
+ *  * **newline** either 'windows' or 'unix'
+ *  * **args** an array of arguments for the sendmail binary
+ *
+ * @constructor
+ * @param {Object} optional config parameter for Sendmail
+ */
+class SendmailTransport {
+    constructor(options) {
+        options = options || {};
+
+        // use a reference to spawn for mocking purposes
+        this._spawn = spawn;
+
+        this.options = options || {};
+
+        this.name = 'Sendmail';
+        this.version = packageData.version;
+
+        this.path = 'sendmail';
+        this.args = false;
+        this.winbreak = false;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'sendmail'
+        });
+
+        if (options) {
+            if (typeof options === 'string') {
+                this.path = options;
+            } else if (typeof options === 'object') {
+                if (options.path) {
+                    this.path = options.path;
+                }
+                if (Array.isArray(options.args)) {
+                    this.args = options.args;
+                }
+                this.winbreak = ['win', 'windows', 'dos', '\r\n'].includes((options.newline || '').toString().toLowerCase());
+            }
+        }
+    }
+
+    /**
+     * <p>Compiles a mailcomposer message and forwards it to handler that sends it.</p>
+     *
+     * @param {Object} emailMessage MailComposer object
+     * @param {Function} callback Callback function to run when the sending is completed
+     */
+    send(mail, done) {
+        // Sendmail strips this header line by itself
+        mail.message.keepBcc = true;
+
+        let envelope = mail.data.envelope || mail.message.getEnvelope();
+        let messageId = mail.message.messageId();
+        let args;
+        let sendmail;
+        let returned;
+        let transform;
+
+        if (this.args) {
+            // force -i to keep single dots
+            args = ['-i'].concat(this.args).concat(envelope.to);
+        } else {
+            args = ['-i'].concat(envelope.from ? ['-f', envelope.from] : []).concat(envelope.to);
+        }
+
+        let callback = err => {
+            if (returned) {
+                // ignore any additional responses, already done
+                return;
+            }
+            returned = true;
+            if (typeof done === 'function') {
+                if (err) {
+                    return done(err);
+                } else {
+                    return done(null, {
+                        envelope: mail.data.envelope || mail.message.getEnvelope(),
+                        messageId,
+                        response: 'Messages queued for delivery'
+                    });
+                }
+            }
+        };
+
+        try {
+            sendmail = this._spawn(this.path, args);
+        } catch (E) {
+            this.logger.error(
+                {
+                    err: E,
+                    tnx: 'spawn',
+                    messageId
+                },
+                'Error occurred while spawning sendmail. %s',
+                E.message
+            );
+            return callback(E);
+        }
+
+        if (sendmail) {
+            sendmail.on('error', err => {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'spawn',
+                        messageId
+                    },
+                    'Error occurred when sending message %s. %s',
+                    messageId,
+                    err.message
+                );
+                callback(err);
+            });
+
+            sendmail.once('exit', code => {
+                if (!code) {
+                    return callback();
+                }
+                let err;
+                if (code === 127) {
+                    err = new Error('Sendmail command not found, process exited with code ' + code);
+                } else {
+                    err = new Error('Sendmail exited with code ' + code);
+                }
+
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'stdin',
+                        messageId
+                    },
+                    'Error sending message %s to sendmail. %s',
+                    messageId,
+                    err.message
+                );
+                callback(err);
+            });
+            sendmail.once('close', callback);
+
+            sendmail.stdin.on('error', err => {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'stdin',
+                        messageId
+                    },
+                    'Error occurred when piping message %s to sendmail. %s',
+                    messageId,
+                    err.message
+                );
+                callback(err);
+            });
+
+            let recipients = [].concat(envelope.to || []);
+            if (recipients.length > 3) {
+                recipients.push('...and ' + recipients.splice(2).length + ' more');
+            }
+            this.logger.info(
+                {
+                    tnx: 'send',
+                    messageId
+                },
+                'Sending message %s to <%s>',
+                messageId,
+                recipients.join(', ')
+            );
+
+            transform = this.winbreak ? new LeWindows() : new LeUnix();
+            let sourceStream = mail.message.createReadStream();
+
+            transform.once('error', err => {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'stdin',
+                        messageId
+                    },
+                    'Error occurred when generating message %s. %s',
+                    messageId,
+                    err.message
+                );
+                sendmail.kill('SIGINT'); // do not deliver the message
+                callback(err);
+            });
+
+            sourceStream.once('error', err => transform.emit('error', err));
+            sourceStream.pipe(transform).pipe(sendmail.stdin);
+        } else {
+            return callback(new Error('sendmail was not found'));
+        }
+    }
+}
+
+module.exports = SendmailTransport;
diff --git a/server/node_modules/nodemailer/lib/sendmail-transport/le-unix.js b/server/node_modules/nodemailer/lib/sendmail-transport/le-unix.js
new file mode 100644
index 0000000..5feacd3
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/sendmail-transport/le-unix.js
@@ -0,0 +1,43 @@
+'use strict';
+
+const stream = require('stream');
+const Transform = stream.Transform;
+
+/**
+ * Ensures that only <LF> is used for linebreaks
+ *
+ * @param {Object} options Stream options
+ */
+class LeWindows extends Transform {
+    constructor(options) {
+        super(options);
+        // init Transform
+        this.options = options || {};
+    }
+
+    /**
+     * Escapes dots
+     */
+    _transform(chunk, encoding, done) {
+        let buf;
+        let lastPos = 0;
+
+        for (let i = 0, len = chunk.length; i < len; i++) {
+            if (chunk[i] === 0x0d) {
+                // \n
+                buf = chunk.slice(lastPos, i);
+                lastPos = i + 1;
+                this.push(buf);
+            }
+        }
+        if (lastPos && lastPos < chunk.length) {
+            buf = chunk.slice(lastPos);
+            this.push(buf);
+        } else if (!lastPos) {
+            this.push(chunk);
+        }
+        done();
+    }
+}
+
+module.exports = LeWindows;
diff --git a/server/node_modules/nodemailer/lib/sendmail-transport/le-windows.js b/server/node_modules/nodemailer/lib/sendmail-transport/le-windows.js
new file mode 100644
index 0000000..b156a7c
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/sendmail-transport/le-windows.js
@@ -0,0 +1,52 @@
+'use strict';
+
+const stream = require('stream');
+const Transform = stream.Transform;
+
+/**
+ * Ensures that only <CR><LF> sequences are used for linebreaks
+ *
+ * @param {Object} options Stream options
+ */
+class LeWindows extends Transform {
+    constructor(options) {
+        super(options);
+        // init Transform
+        this.options = options || {};
+        this.lastByte = false;
+    }
+
+    /**
+     * Escapes dots
+     */
+    _transform(chunk, encoding, done) {
+        let buf;
+        let lastPos = 0;
+
+        for (let i = 0, len = chunk.length; i < len; i++) {
+            if (chunk[i] === 0x0a) {
+                // \n
+                if ((i && chunk[i - 1] !== 0x0d) || (!i && this.lastByte !== 0x0d)) {
+                    if (i > lastPos) {
+                        buf = chunk.slice(lastPos, i);
+                        this.push(buf);
+                    }
+                    this.push(Buffer.from('\r\n'));
+                    lastPos = i + 1;
+                }
+            }
+        }
+
+        if (lastPos && lastPos < chunk.length) {
+            buf = chunk.slice(lastPos);
+            this.push(buf);
+        } else if (!lastPos) {
+            this.push(chunk);
+        }
+
+        this.lastByte = chunk[chunk.length - 1];
+        done();
+    }
+}
+
+module.exports = LeWindows;
diff --git a/server/node_modules/nodemailer/lib/ses-transport/index.js b/server/node_modules/nodemailer/lib/ses-transport/index.js
new file mode 100644
index 0000000..37dced9
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/ses-transport/index.js
@@ -0,0 +1,312 @@
+'use strict';
+
+const EventEmitter = require('events');
+const packageData = require('../../package.json');
+const shared = require('../shared');
+const LeWindows = require('../sendmail-transport/le-windows');
+
+/**
+ * Generates a Transport object for AWS SES
+ *
+ * Possible options can be the following:
+ *
+ *  * **sendingRate** optional Number specifying how many messages per second should be delivered to SES
+ *  * **maxConnections** optional Number specifying max number of parallel connections to SES
+ *
+ * @constructor
+ * @param {Object} optional config parameter
+ */
+class SESTransport extends EventEmitter {
+    constructor(options) {
+        super();
+        options = options || {};
+
+        this.options = options || {};
+        this.ses = this.options.SES;
+
+        this.name = 'SESTransport';
+        this.version = packageData.version;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'ses-transport'
+        });
+
+        // parallel sending connections
+        this.maxConnections = Number(this.options.maxConnections) || Infinity;
+        this.connections = 0;
+
+        // max messages per second
+        this.sendingRate = Number(this.options.sendingRate) || Infinity;
+        this.sendingRateTTL = null;
+        this.rateInterval = 1000;
+        this.rateMessages = [];
+
+        this.pending = [];
+
+        this.idling = true;
+
+        setImmediate(() => {
+            if (this.idling) {
+                this.emit('idle');
+            }
+        });
+    }
+
+    /**
+     * Schedules a sending of a message
+     *
+     * @param {Object} emailMessage MailComposer object
+     * @param {Function} callback Callback function to run when the sending is completed
+     */
+    send(mail, callback) {
+        if (this.connections >= this.maxConnections) {
+            this.idling = false;
+            return this.pending.push({
+                mail,
+                callback
+            });
+        }
+
+        if (!this._checkSendingRate()) {
+            this.idling = false;
+            return this.pending.push({
+                mail,
+                callback
+            });
+        }
+
+        this._send(mail, (...args) => {
+            setImmediate(() => callback(...args));
+            this._sent();
+        });
+    }
+
+    _checkRatedQueue() {
+        if (this.connections >= this.maxConnections || !this._checkSendingRate()) {
+            return;
+        }
+
+        if (!this.pending.length) {
+            if (!this.idling) {
+                this.idling = true;
+                this.emit('idle');
+            }
+            return;
+        }
+
+        let next = this.pending.shift();
+        this._send(next.mail, (...args) => {
+            setImmediate(() => next.callback(...args));
+            this._sent();
+        });
+    }
+
+    _checkSendingRate() {
+        clearTimeout(this.sendingRateTTL);
+
+        let now = Date.now();
+        let oldest = false;
+        // delete older messages
+        for (let i = this.rateMessages.length - 1; i >= 0; i--) {
+            if (this.rateMessages[i].ts >= now - this.rateInterval && (!oldest || this.rateMessages[i].ts < oldest)) {
+                oldest = this.rateMessages[i].ts;
+            }
+
+            if (this.rateMessages[i].ts < now - this.rateInterval && !this.rateMessages[i].pending) {
+                this.rateMessages.splice(i, 1);
+            }
+        }
+
+        if (this.rateMessages.length < this.sendingRate) {
+            return true;
+        }
+
+        let delay = Math.max(oldest + 1001, now + 20);
+        this.sendingRateTTL = setTimeout(() => this._checkRatedQueue(), now - delay);
+
+        try {
+            this.sendingRateTTL.unref();
+        } catch (E) {
+            // Ignore. Happens on envs with non-node timer implementation
+        }
+
+        return false;
+    }
+
+    _sent() {
+        this.connections--;
+        this._checkRatedQueue();
+    }
+
+    /**
+     * Returns true if there are free slots in the queue
+     */
+    isIdle() {
+        return this.idling;
+    }
+
+    /**
+     * Compiles a mailcomposer message and forwards it to SES
+     *
+     * @param {Object} emailMessage MailComposer object
+     * @param {Function} callback Callback function to run when the sending is completed
+     */
+    _send(mail, callback) {
+        let statObject = {
+            ts: Date.now(),
+            pending: true
+        };
+        this.connections++;
+        this.rateMessages.push(statObject);
+
+        let envelope = mail.data.envelope || mail.message.getEnvelope();
+        let messageId = mail.message.messageId();
+
+        let recipients = [].concat(envelope.to || []);
+        if (recipients.length > 3) {
+            recipients.push('...and ' + recipients.splice(2).length + ' more');
+        }
+        this.logger.info(
+            {
+                tnx: 'send',
+                messageId
+            },
+            'Sending message %s to <%s>',
+            messageId,
+            recipients.join(', ')
+        );
+
+        let getRawMessage = next => {
+            // do not use Message-ID and Date in DKIM signature
+            if (!mail.data._dkim) {
+                mail.data._dkim = {};
+            }
+            if (mail.data._dkim.skipFields && typeof mail.data._dkim.skipFields === 'string') {
+                mail.data._dkim.skipFields += ':date:message-id';
+            } else {
+                mail.data._dkim.skipFields = 'date:message-id';
+            }
+
+            let sourceStream = mail.message.createReadStream();
+            let stream = sourceStream.pipe(new LeWindows());
+            let chunks = [];
+            let chunklen = 0;
+
+            stream.on('readable', () => {
+                let chunk;
+                while ((chunk = stream.read()) !== null) {
+                    chunks.push(chunk);
+                    chunklen += chunk.length;
+                }
+            });
+
+            sourceStream.once('error', err => stream.emit('error', err));
+
+            stream.once('error', err => {
+                next(err);
+            });
+
+            stream.once('end', () => next(null, Buffer.concat(chunks, chunklen)));
+        };
+
+        setImmediate(() =>
+            getRawMessage((err, raw) => {
+                if (err) {
+                    this.logger.error(
+                        {
+                            err,
+                            tnx: 'send',
+                            messageId
+                        },
+                        'Failed creating message for %s. %s',
+                        messageId,
+                        err.message
+                    );
+                    statObject.pending = false;
+                    return callback(err);
+                }
+
+                let sesMessage = {
+                    RawMessage: {
+                        // required
+                        Data: raw // required
+                    },
+                    Source: envelope.from,
+                    Destinations: envelope.to
+                };
+
+                Object.keys(mail.data.ses || {}).forEach(key => {
+                    sesMessage[key] = mail.data.ses[key];
+                });
+
+                this.ses.sendRawEmail(sesMessage, (err, data) => {
+                    if (err) {
+                        this.logger.error(
+                            {
+                                err,
+                                tnx: 'send'
+                            },
+                            'Send error for %s: %s',
+                            messageId,
+                            err.message
+                        );
+                        statObject.pending = false;
+                        return callback(err);
+                    }
+
+                    let region = (this.ses.config && this.ses.config.region) || 'us-east-1';
+                    if (region === 'us-east-1') {
+                        region = 'email';
+                    }
+
+                    statObject.pending = false;
+                    callback(null, {
+                        envelope: {
+                            from: envelope.from,
+                            to: envelope.to
+                        },
+                        messageId: '<' + data.MessageId + (!/@/.test(data.MessageId) ? '@' + region + '.amazonses.com' : '') + '>',
+                        response: data.MessageId,
+                        raw
+                    });
+                });
+            })
+        );
+    }
+
+    /**
+     * Verifies SES configuration
+     *
+     * @param {Function} callback Callback function
+     */
+    verify(callback) {
+        let promise;
+
+        if (!callback) {
+            promise = new Promise((resolve, reject) => {
+                callback = shared.callbackPromise(resolve, reject);
+            });
+        }
+
+        this.ses.sendRawEmail(
+            {
+                RawMessage: {
+                    // required
+                    Data: 'From: invalid@invalid\r\nTo: invalid@invalid\r\n Subject: Invalid\r\n\r\nInvalid'
+                },
+                Source: 'invalid@invalid',
+                Destinations: ['invalid@invalid']
+            },
+            err => {
+                if (err && err.code !== 'InvalidParameterValue') {
+                    return callback(err);
+                }
+                return callback(null, true);
+            }
+        );
+
+        return promise;
+    }
+}
+
+module.exports = SESTransport;
diff --git a/server/node_modules/nodemailer/lib/shared/index.js b/server/node_modules/nodemailer/lib/shared/index.js
new file mode 100644
index 0000000..b2571c1
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/shared/index.js
@@ -0,0 +1,510 @@
+/* eslint no-console: 0 */
+
+'use strict';
+
+const urllib = require('url');
+const util = require('util');
+const fs = require('fs');
+const fetch = require('../fetch');
+const dns = require('dns');
+const net = require('net');
+
+const DNS_TTL = 5 * 60 * 1000;
+
+const resolver = (family, hostname, callback) => {
+    dns['resolve' + family](hostname, (err, addresses) => {
+        if (err) {
+            switch (err.code) {
+                case dns.NODATA:
+                case dns.NOTFOUND:
+                case dns.NOTIMP:
+                case dns.SERVFAIL:
+                case dns.CONNREFUSED:
+                case 'EAI_AGAIN':
+                    return callback(null, []);
+            }
+            return callback(err);
+        }
+        return callback(null, Array.isArray(addresses) ? addresses : [].concat(addresses || []));
+    });
+};
+
+const dnsCache = (module.exports.dnsCache = new Map());
+module.exports.resolveHostname = (options, callback) => {
+    options = options || {};
+
+    if (!options.host || net.isIP(options.host)) {
+        // nothing to do here
+        let value = {
+            host: options.host,
+            servername: options.servername || false
+        };
+        return callback(null, value);
+    }
+
+    let cached;
+
+    if (dnsCache.has(options.host)) {
+        cached = dnsCache.get(options.host);
+        if (!cached.expires || cached.expires >= Date.now()) {
+            return callback(null, {
+                host: cached.value.host,
+                servername: cached.value.servername,
+                _cached: true
+            });
+        }
+    }
+
+    resolver(4, options.host, (err, addresses) => {
+        if (err) {
+            if (cached) {
+                // ignore error, use expired value
+                return callback(null, cached.value);
+            }
+            return callback(err);
+        }
+        if (addresses && addresses.length) {
+            let value = {
+                host: addresses[0] || options.host,
+                servername: options.servername || options.host
+            };
+            dnsCache.set(options.host, {
+                value,
+                expires: Date.now() + DNS_TTL
+            });
+            return callback(null, value);
+        }
+
+        resolver(6, options.host, (err, addresses) => {
+            if (err) {
+                if (cached) {
+                    // ignore error, use expired value
+                    return callback(null, cached.value);
+                }
+                return callback(err);
+            }
+            if (addresses && addresses.length) {
+                let value = {
+                    host: addresses[0] || options.host,
+                    servername: options.servername || options.host
+                };
+                dnsCache.set(options.host, {
+                    value,
+                    expires: Date.now() + DNS_TTL
+                });
+                return callback(null, value);
+            }
+
+            try {
+                dns.lookup(options.host, {}, (err, address) => {
+                    if (err) {
+                        if (cached) {
+                            // ignore error, use expired value
+                            return callback(null, cached.value);
+                        }
+                        return callback(err);
+                    }
+
+                    if (!address && cached) {
+                        // nothing was found, fallback to cached value
+                        return callback(null, cached.value);
+                    }
+
+                    let value = {
+                        host: address || options.host,
+                        servername: options.servername || options.host
+                    };
+                    dnsCache.set(options.host, {
+                        value,
+                        expires: Date.now() + DNS_TTL
+                    });
+                    return callback(null, value);
+                });
+            } catch (err) {
+                if (cached) {
+                    // ignore error, use expired value
+                    return callback(null, cached.value);
+                }
+                return callback(err);
+            }
+        });
+    });
+};
+/**
+ * Parses connection url to a structured configuration object
+ *
+ * @param {String} str Connection url
+ * @return {Object} Configuration object
+ */
+module.exports.parseConnectionUrl = str => {
+    str = str || '';
+    let options = {};
+
+    [urllib.parse(str, true)].forEach(url => {
+        let auth;
+
+        switch (url.protocol) {
+            case 'smtp:':
+                options.secure = false;
+                break;
+            case 'smtps:':
+                options.secure = true;
+                break;
+            case 'direct:':
+                options.direct = true;
+                break;
+        }
+
+        if (!isNaN(url.port) && Number(url.port)) {
+            options.port = Number(url.port);
+        }
+
+        if (url.hostname) {
+            options.host = url.hostname;
+        }
+
+        if (url.auth) {
+            auth = url.auth.split(':');
+
+            if (!options.auth) {
+                options.auth = {};
+            }
+
+            options.auth.user = auth.shift();
+            options.auth.pass = auth.join(':');
+        }
+
+        Object.keys(url.query || {}).forEach(key => {
+            let obj = options;
+            let lKey = key;
+            let value = url.query[key];
+
+            if (!isNaN(value)) {
+                value = Number(value);
+            }
+
+            switch (value) {
+                case 'true':
+                    value = true;
+                    break;
+                case 'false':
+                    value = false;
+                    break;
+            }
+
+            // tls is nested object
+            if (key.indexOf('tls.') === 0) {
+                lKey = key.substr(4);
+                if (!options.tls) {
+                    options.tls = {};
+                }
+                obj = options.tls;
+            } else if (key.indexOf('.') >= 0) {
+                // ignore nested properties besides tls
+                return;
+            }
+
+            if (!(lKey in obj)) {
+                obj[lKey] = value;
+            }
+        });
+    });
+
+    return options;
+};
+
+module.exports._logFunc = (logger, level, defaults, data, message, ...args) => {
+    let entry = {};
+
+    Object.keys(defaults || {}).forEach(key => {
+        if (key !== 'level') {
+            entry[key] = defaults[key];
+        }
+    });
+
+    Object.keys(data || {}).forEach(key => {
+        if (key !== 'level') {
+            entry[key] = data[key];
+        }
+    });
+
+    logger[level](entry, message, ...args);
+};
+
+/**
+ * Returns a bunyan-compatible logger interface. Uses either provided logger or
+ * creates a default console logger
+ *
+ * @param {Object} [options] Options object that might include 'logger' value
+ * @return {Object} bunyan compatible logger
+ */
+module.exports.getLogger = (options, defaults) => {
+    options = options || {};
+
+    let response = {};
+    let levels = ['trace', 'debug', 'info', 'warn', 'error', 'fatal'];
+
+    if (!options.logger) {
+        // use vanity logger
+        levels.forEach(level => {
+            response[level] = () => false;
+        });
+        return response;
+    }
+
+    let logger = options.logger;
+
+    if (options.logger === true) {
+        // create console logger
+        logger = createDefaultLogger(levels);
+    }
+
+    levels.forEach(level => {
+        response[level] = (data, message, ...args) => {
+            module.exports._logFunc(logger, level, defaults, data, message, ...args);
+        };
+    });
+
+    return response;
+};
+
+/**
+ * Wrapper for creating a callback that either resolves or rejects a promise
+ * based on input
+ *
+ * @param {Function} resolve Function to run if callback is called
+ * @param {Function} reject Function to run if callback ends with an error
+ */
+module.exports.callbackPromise = (resolve, reject) =>
+    function() {
+        let args = Array.from(arguments);
+        let err = args.shift();
+        if (err) {
+            reject(err);
+        } else {
+            resolve(...args);
+        }
+    };
+
+/**
+ * Resolves a String or a Buffer value for content value. Useful if the value
+ * is a Stream or a file or an URL. If the value is a Stream, overwrites
+ * the stream object with the resolved value (you can't stream a value twice).
+ *
+ * This is useful when you want to create a plugin that needs a content value,
+ * for example the `html` or `text` value as a String or a Buffer but not as
+ * a file path or an URL.
+ *
+ * @param {Object} data An object or an Array you want to resolve an element for
+ * @param {String|Number} key Property name or an Array index
+ * @param {Function} callback Callback function with (err, value)
+ */
+module.exports.resolveContent = (data, key, callback) => {
+    let promise;
+
+    if (!callback) {
+        promise = new Promise((resolve, reject) => {
+            callback = module.exports.callbackPromise(resolve, reject);
+        });
+    }
+
+    let content = (data && data[key] && data[key].content) || data[key];
+    let contentStream;
+    let encoding = ((typeof data[key] === 'object' && data[key].encoding) || 'utf8')
+        .toString()
+        .toLowerCase()
+        .replace(/[-_\s]/g, '');
+
+    if (!content) {
+        return callback(null, content);
+    }
+
+    if (typeof content === 'object') {
+        if (typeof content.pipe === 'function') {
+            return resolveStream(content, (err, value) => {
+                if (err) {
+                    return callback(err);
+                }
+                // we can't stream twice the same content, so we need
+                // to replace the stream object with the streaming result
+                data[key] = value;
+                callback(null, value);
+            });
+        } else if (/^https?:\/\//i.test(content.path || content.href)) {
+            contentStream = fetch(content.path || content.href);
+            return resolveStream(contentStream, callback);
+        } else if (/^data:/i.test(content.path || content.href)) {
+            let parts = (content.path || content.href).match(/^data:((?:[^;]*;)*(?:[^,]*)),(.*)$/i);
+            if (!parts) {
+                return callback(null, Buffer.from(0));
+            }
+            return callback(null, /\bbase64$/i.test(parts[1]) ? Buffer.from(parts[2], 'base64') : Buffer.from(decodeURIComponent(parts[2])));
+        } else if (content.path) {
+            return resolveStream(fs.createReadStream(content.path), callback);
+        }
+    }
+
+    if (typeof data[key].content === 'string' && !['utf8', 'usascii', 'ascii'].includes(encoding)) {
+        content = Buffer.from(data[key].content, encoding);
+    }
+
+    // default action, return as is
+    setImmediate(() => callback(null, content));
+
+    return promise;
+};
+
+/**
+ * Copies properties from source objects to target objects
+ */
+module.exports.assign = function(/* target, ... sources */) {
+    let args = Array.from(arguments);
+    let target = args.shift() || {};
+
+    args.forEach(source => {
+        Object.keys(source || {}).forEach(key => {
+            if (['tls', 'auth'].includes(key) && source[key] && typeof source[key] === 'object') {
+                // tls and auth are special keys that need to be enumerated separately
+                // other objects are passed as is
+                if (!target[key]) {
+                    // ensure that target has this key
+                    target[key] = {};
+                }
+                Object.keys(source[key]).forEach(subKey => {
+                    target[key][subKey] = source[key][subKey];
+                });
+            } else {
+                target[key] = source[key];
+            }
+        });
+    });
+    return target;
+};
+
+module.exports.encodeXText = str => {
+    // ! 0x21
+    // + 0x2B
+    // = 0x3D
+    // ~ 0x7E
+    if (!/[^\x21-\x2A\x2C-\x3C\x3E-\x7E]/.test(str)) {
+        return str;
+    }
+    let buf = Buffer.from(str);
+    let result = '';
+    for (let i = 0, len = buf.length; i < len; i++) {
+        let c = buf[i];
+        if (c < 0x21 || c > 0x7e || c === 0x2b || c === 0x3d) {
+            result += '+' + (c < 0x10 ? '0' : '') + c.toString(16).toUpperCase();
+        } else {
+            result += String.fromCharCode(c);
+        }
+    }
+    return result;
+};
+
+/**
+ * Streams a stream value into a Buffer
+ *
+ * @param {Object} stream Readable stream
+ * @param {Function} callback Callback function with (err, value)
+ */
+function resolveStream(stream, callback) {
+    let responded = false;
+    let chunks = [];
+    let chunklen = 0;
+
+    stream.on('error', err => {
+        if (responded) {
+            return;
+        }
+
+        responded = true;
+        callback(err);
+    });
+
+    stream.on('readable', () => {
+        let chunk;
+        while ((chunk = stream.read()) !== null) {
+            chunks.push(chunk);
+            chunklen += chunk.length;
+        }
+    });
+
+    stream.on('end', () => {
+        if (responded) {
+            return;
+        }
+        responded = true;
+
+        let value;
+
+        try {
+            value = Buffer.concat(chunks, chunklen);
+        } catch (E) {
+            return callback(E);
+        }
+        callback(null, value);
+    });
+}
+
+/**
+ * Generates a bunyan-like logger that prints to console
+ *
+ * @returns {Object} Bunyan logger instance
+ */
+function createDefaultLogger(levels) {
+    let levelMaxLen = 0;
+    let levelNames = new Map();
+    levels.forEach(level => {
+        if (level.length > levelMaxLen) {
+            levelMaxLen = level.length;
+        }
+    });
+
+    levels.forEach(level => {
+        let levelName = level.toUpperCase();
+        if (levelName.length < levelMaxLen) {
+            levelName += ' '.repeat(levelMaxLen - levelName.length);
+        }
+        levelNames.set(level, levelName);
+    });
+
+    let print = (level, entry, message, ...args) => {
+        let prefix = '';
+        if (entry) {
+            if (entry.tnx === 'server') {
+                prefix = 'S: ';
+            } else if (entry.tnx === 'client') {
+                prefix = 'C: ';
+            }
+
+            if (entry.sid) {
+                prefix = '[' + entry.sid + '] ' + prefix;
+            }
+
+            if (entry.cid) {
+                prefix = '[#' + entry.cid + '] ' + prefix;
+            }
+        }
+
+        message = util.format(message, ...args);
+        message.split(/\r?\n/).forEach(line => {
+            console.log(
+                '[%s] %s %s',
+                new Date()
+                    .toISOString()
+                    .substr(0, 19)
+                    .replace(/T/, ' '),
+                levelNames.get(level),
+                prefix + line
+            );
+        });
+    };
+
+    let logger = {};
+    levels.forEach(level => {
+        logger[level] = print.bind(null, level);
+    });
+
+    return logger;
+}
diff --git a/server/node_modules/nodemailer/lib/smtp-connection/data-stream.js b/server/node_modules/nodemailer/lib/smtp-connection/data-stream.js
new file mode 100644
index 0000000..5efa087
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-connection/data-stream.js
@@ -0,0 +1,108 @@
+'use strict';
+
+const stream = require('stream');
+const Transform = stream.Transform;
+
+/**
+ * Escapes dots in the beginning of lines. Ends the stream with <CR><LF>.<CR><LF>
+ * Also makes sure that only <CR><LF> sequences are used for linebreaks
+ *
+ * @param {Object} options Stream options
+ */
+class DataStream extends Transform {
+    constructor(options) {
+        super(options);
+        // init Transform
+        this.options = options || {};
+        this._curLine = '';
+
+        this.inByteCount = 0;
+        this.outByteCount = 0;
+        this.lastByte = false;
+    }
+
+    /**
+     * Escapes dots
+     */
+    _transform(chunk, encoding, done) {
+        let chunks = [];
+        let chunklen = 0;
+        let i,
+            len,
+            lastPos = 0;
+        let buf;
+
+        if (!chunk || !chunk.length) {
+            return done();
+        }
+
+        if (typeof chunk === 'string') {
+            chunk = Buffer.from(chunk);
+        }
+
+        this.inByteCount += chunk.length;
+
+        for (i = 0, len = chunk.length; i < len; i++) {
+            if (chunk[i] === 0x2e) {
+                // .
+                if ((i && chunk[i - 1] === 0x0a) || (!i && (!this.lastByte || this.lastByte === 0x0a))) {
+                    buf = chunk.slice(lastPos, i + 1);
+                    chunks.push(buf);
+                    chunks.push(Buffer.from('.'));
+                    chunklen += buf.length + 1;
+                    lastPos = i + 1;
+                }
+            } else if (chunk[i] === 0x0a) {
+                // .
+                if ((i && chunk[i - 1] !== 0x0d) || (!i && this.lastByte !== 0x0d)) {
+                    if (i > lastPos) {
+                        buf = chunk.slice(lastPos, i);
+                        chunks.push(buf);
+                        chunklen += buf.length + 2;
+                    } else {
+                        chunklen += 2;
+                    }
+                    chunks.push(Buffer.from('\r\n'));
+                    lastPos = i + 1;
+                }
+            }
+        }
+
+        if (chunklen) {
+            // add last piece
+            if (lastPos < chunk.length) {
+                buf = chunk.slice(lastPos);
+                chunks.push(buf);
+                chunklen += buf.length;
+            }
+
+            this.outByteCount += chunklen;
+            this.push(Buffer.concat(chunks, chunklen));
+        } else {
+            this.outByteCount += chunk.length;
+            this.push(chunk);
+        }
+
+        this.lastByte = chunk[chunk.length - 1];
+        done();
+    }
+
+    /**
+     * Finalizes the stream with a dot on a single line
+     */
+    _flush(done) {
+        let buf;
+        if (this.lastByte === 0x0a) {
+            buf = Buffer.from('.\r\n');
+        } else if (this.lastByte === 0x0d) {
+            buf = Buffer.from('\n.\r\n');
+        } else {
+            buf = Buffer.from('\r\n.\r\n');
+        }
+        this.outByteCount += buf.length;
+        this.push(buf);
+        done();
+    }
+}
+
+module.exports = DataStream;
diff --git a/server/node_modules/nodemailer/lib/smtp-connection/http-proxy-client.js b/server/node_modules/nodemailer/lib/smtp-connection/http-proxy-client.js
new file mode 100644
index 0000000..efb2503
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-connection/http-proxy-client.js
@@ -0,0 +1,131 @@
+'use strict';
+
+/**
+ * Minimal HTTP/S proxy client
+ */
+
+const net = require('net');
+const tls = require('tls');
+const urllib = require('url');
+
+/**
+ * Establishes proxied connection to destinationPort
+ *
+ * httpProxyClient("http://localhost:3128/", 80, "google.com", function(err, socket){
+ *     socket.write("GET / HTTP/1.0\r\n\r\n");
+ * });
+ *
+ * @param {String} proxyUrl proxy configuration, etg "http://proxy.host:3128/"
+ * @param {Number} destinationPort Port to open in destination host
+ * @param {String} destinationHost Destination hostname
+ * @param {Function} callback Callback to run with the rocket object once connection is established
+ */
+function httpProxyClient(proxyUrl, destinationPort, destinationHost, callback) {
+    let proxy = urllib.parse(proxyUrl);
+
+    // create a socket connection to the proxy server
+    let options;
+    let connect;
+    let socket;
+
+    options = {
+        host: proxy.hostname,
+        port: Number(proxy.port) ? Number(proxy.port) : proxy.protocol === 'https:' ? 443 : 80
+    };
+
+    if (proxy.protocol === 'https:') {
+        // we can use untrusted proxies as long as we verify actual SMTP certificates
+        options.rejectUnauthorized = false;
+        connect = tls.connect.bind(tls);
+    } else {
+        connect = net.connect.bind(net);
+    }
+
+    // Error harness for initial connection. Once connection is established, the responsibility
+    // to handle errors is passed to whoever uses this socket
+    let finished = false;
+    let tempSocketErr = function(err) {
+        if (finished) {
+            return;
+        }
+        finished = true;
+        try {
+            socket.destroy();
+        } catch (E) {
+            // ignore
+        }
+        callback(err);
+    };
+
+    socket = connect(options, () => {
+        if (finished) {
+            return;
+        }
+
+        let reqHeaders = {
+            Host: destinationHost + ':' + destinationPort,
+            Connection: 'close'
+        };
+        if (proxy.auth) {
+            reqHeaders['Proxy-Authorization'] = 'Basic ' + Buffer.from(proxy.auth).toString('base64');
+        }
+
+        socket.write(
+            // HTTP method
+            'CONNECT ' +
+                destinationHost +
+                ':' +
+                destinationPort +
+                ' HTTP/1.1\r\n' +
+                // HTTP request headers
+                Object.keys(reqHeaders)
+                    .map(key => key + ': ' + reqHeaders[key])
+                    .join('\r\n') +
+                // End request
+                '\r\n\r\n'
+        );
+
+        let headers = '';
+        let onSocketData = chunk => {
+            let match;
+            let remainder;
+
+            if (finished) {
+                return;
+            }
+
+            headers += chunk.toString('binary');
+            if ((match = headers.match(/\r\n\r\n/))) {
+                socket.removeListener('data', onSocketData);
+
+                remainder = headers.substr(match.index + match[0].length);
+                headers = headers.substr(0, match.index);
+                if (remainder) {
+                    socket.unshift(Buffer.from(remainder, 'binary'));
+                }
+
+                // proxy connection is now established
+                finished = true;
+
+                // check response code
+                match = headers.match(/^HTTP\/\d+\.\d+ (\d+)/i);
+                if (!match || (match[1] || '').charAt(0) !== '2') {
+                    try {
+                        socket.destroy();
+                    } catch (E) {
+                        // ignore
+                    }
+                    return callback(new Error('Invalid response from proxy' + ((match && ': ' + match[1]) || '')));
+                }
+
+                socket.removeListener('error', tempSocketErr);
+                return callback(null, socket);
+            }
+        };
+        socket.on('data', onSocketData);
+    });
+
+    socket.once('error', tempSocketErr);
+}
+
+module.exports = httpProxyClient;
diff --git a/server/node_modules/nodemailer/lib/smtp-connection/index.js b/server/node_modules/nodemailer/lib/smtp-connection/index.js
new file mode 100644
index 0000000..4db05e1
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-connection/index.js
@@ -0,0 +1,1757 @@
+'use strict';
+
+const packageInfo = require('../../package.json');
+const EventEmitter = require('events').EventEmitter;
+const net = require('net');
+const tls = require('tls');
+const os = require('os');
+const crypto = require('crypto');
+const DataStream = require('./data-stream');
+const PassThrough = require('stream').PassThrough;
+const shared = require('../shared');
+
+// default timeout values in ms
+const CONNECTION_TIMEOUT = 2 * 60 * 1000; // how much to wait for the connection to be established
+const SOCKET_TIMEOUT = 10 * 60 * 1000; // how much to wait for socket inactivity before disconnecting the client
+const GREETING_TIMEOUT = 30 * 1000; // how much to wait after connection is established but SMTP greeting is not receieved
+
+/**
+ * Generates a SMTP connection object
+ *
+ * Optional options object takes the following possible properties:
+ *
+ *  * **port** - is the port to connect to (defaults to 587 or 465)
+ *  * **host** - is the hostname or IP address to connect to (defaults to 'localhost')
+ *  * **secure** - use SSL
+ *  * **ignoreTLS** - ignore server support for STARTTLS
+ *  * **requireTLS** - forces the client to use STARTTLS
+ *  * **name** - the name of the client server
+ *  * **localAddress** - outbound address to bind to (see: http://nodejs.org/api/net.html#net_net_connect_options_connectionlistener)
+ *  * **greetingTimeout** - Time to wait in ms until greeting message is received from the server (defaults to 10000)
+ *  * **connectionTimeout** - how many milliseconds to wait for the connection to establish
+ *  * **socketTimeout** - Time of inactivity until the connection is closed (defaults to 1 hour)
+ *  * **lmtp** - if true, uses LMTP instead of SMTP protocol
+ *  * **logger** - bunyan compatible logger interface
+ *  * **debug** - if true pass SMTP traffic to the logger
+ *  * **tls** - options for createCredentials
+ *  * **socket** - existing socket to use instead of creating a new one (see: http://nodejs.org/api/net.html#net_class_net_socket)
+ *  * **secured** - boolean indicates that the provided socket has already been upgraded to tls
+ *
+ * @constructor
+ * @namespace SMTP Client module
+ * @param {Object} [options] Option properties
+ */
+class SMTPConnection extends EventEmitter {
+    constructor(options) {
+        super(options);
+
+        this.id = crypto
+            .randomBytes(8)
+            .toString('base64')
+            .replace(/\W/g, '');
+        this.stage = 'init';
+
+        this.options = options || {};
+
+        this.secureConnection = !!this.options.secure;
+        this.alreadySecured = !!this.options.secured;
+
+        this.port = Number(this.options.port) || (this.secureConnection ? 465 : 587);
+        this.host = this.options.host || 'localhost';
+
+        if (typeof this.options.secure === 'undefined' && this.port === 465) {
+            // if secure option is not set but port is 465, then default to secure
+            this.secureConnection = true;
+        }
+
+        this.name = this.options.name || this._getHostname();
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'smtp-connection',
+            sid: this.id
+        });
+
+        this.customAuth = new Map();
+        Object.keys(this.options.customAuth || {}).forEach(key => {
+            let mapKey = (key || '')
+                .toString()
+                .trim()
+                .toUpperCase();
+            if (!mapKey) {
+                return;
+            }
+            this.customAuth.set(mapKey, this.options.customAuth[key]);
+        });
+
+        /**
+         * Expose version nr, just for the reference
+         * @type {String}
+         */
+        this.version = packageInfo.version;
+
+        /**
+         * If true, then the user is authenticated
+         * @type {Boolean}
+         */
+        this.authenticated = false;
+
+        /**
+         * If set to true, this instance is no longer active
+         * @private
+         */
+        this.destroyed = false;
+
+        /**
+         * Defines if the current connection is secure or not. If not,
+         * STARTTLS can be used if available
+         * @private
+         */
+        this.secure = !!this.secureConnection;
+
+        /**
+         * Store incomplete messages coming from the server
+         * @private
+         */
+        this._remainder = '';
+
+        /**
+         * Unprocessed responses from the server
+         * @type {Array}
+         */
+        this._responseQueue = [];
+
+        this.lastServerResponse = false;
+
+        /**
+         * The socket connecting to the server
+         * @publick
+         */
+        this._socket = false;
+
+        /**
+         * Lists supported auth mechanisms
+         * @private
+         */
+        this._supportedAuth = [];
+
+        /**
+         * Set to true, if EHLO response includes "AUTH".
+         * If false then authentication is not tried
+         */
+        this.allowsAuth = false;
+
+        /**
+         * Includes current envelope (from, to)
+         * @private
+         */
+        this._envelope = false;
+
+        /**
+         * Lists supported extensions
+         * @private
+         */
+        this._supportedExtensions = [];
+
+        /**
+         * Defines the maximum allowed size for a single message
+         * @private
+         */
+        this._maxAllowedSize = 0;
+
+        /**
+         * Function queue to run if a data chunk comes from the server
+         * @private
+         */
+        this._responseActions = [];
+        this._recipientQueue = [];
+
+        /**
+         * Timeout variable for waiting the greeting
+         * @private
+         */
+        this._greetingTimeout = false;
+
+        /**
+         * Timeout variable for waiting the connection to start
+         * @private
+         */
+        this._connectionTimeout = false;
+
+        /**
+         * If the socket is deemed already closed
+         * @private
+         */
+        this._destroyed = false;
+
+        /**
+         * If the socket is already being closed
+         * @private
+         */
+        this._closing = false;
+
+        /**
+         * Callbacks for socket's listeners
+         */
+        this._onSocketData = chunk => this._onData(chunk);
+        this._onSocketError = error => this._onError(error, 'ESOCKET', false, 'CONN');
+        this._onSocketClose = () => this._onClose();
+        this._onSocketEnd = () => this._onEnd();
+        this._onSocketTimeout = () => this._onTimeout();
+    }
+
+    /**
+     * Creates a connection to a SMTP server and sets up connection
+     * listener
+     */
+    connect(connectCallback) {
+        if (typeof connectCallback === 'function') {
+            this.once('connect', () => {
+                this.logger.debug(
+                    {
+                        tnx: 'smtp'
+                    },
+                    'SMTP handshake finished'
+                );
+                connectCallback();
+            });
+
+            const isDestroyedMessage = this._isDestroyedMessage('connect');
+            if (isDestroyedMessage) {
+                return connectCallback(this._formatError(isDestroyedMessage, 'ECONNECTION', false, 'CONN'));
+            }
+        }
+
+        let opts = {
+            port: this.port,
+            host: this.host
+        };
+
+        if (this.options.localAddress) {
+            opts.localAddress = this.options.localAddress;
+        }
+
+        let setupConnectionHandlers = () => {
+            this._connectionTimeout = setTimeout(() => {
+                this._onError('Connection timeout', 'ETIMEDOUT', false, 'CONN');
+            }, this.options.connectionTimeout || CONNECTION_TIMEOUT);
+
+            this._socket.on('error', this._onSocketError);
+        };
+
+        if (this.options.connection) {
+            // connection is already opened
+            this._socket = this.options.connection;
+            if (this.secureConnection && !this.alreadySecured) {
+                setImmediate(() =>
+                    this._upgradeConnection(err => {
+                        if (err) {
+                            this._onError(new Error('Error initiating TLS - ' + (err.message || err)), 'ETLS', false, 'CONN');
+                            return;
+                        }
+                        this._onConnect();
+                    })
+                );
+            } else {
+                setImmediate(() => this._onConnect());
+            }
+            return;
+        } else if (this.options.socket) {
+            // socket object is set up but not yet connected
+            this._socket = this.options.socket;
+            return shared.resolveHostname(opts, (err, resolved) => {
+                if (err) {
+                    return setImmediate(() => this._onError(err, 'EDNS', false, 'CONN'));
+                }
+                this.logger.debug(
+                    {
+                        tnx: 'dns',
+                        source: opts.host,
+                        resolved: resolved.host,
+                        cached: !!resolved._cached
+                    },
+                    'Resolved %s as %s [cache %s]',
+                    opts.host,
+                    resolved.host,
+                    resolved._cached ? 'hit' : 'miss'
+                );
+                Object.keys(resolved).forEach(key => {
+                    if (key.charAt(0) !== '_' && resolved[key]) {
+                        opts[key] = resolved[key];
+                    }
+                });
+                try {
+                    this._socket.connect(this.port, this.host, () => {
+                        this._socket.setKeepAlive(true);
+                        this._onConnect();
+                    });
+                    setupConnectionHandlers();
+                } catch (E) {
+                    return setImmediate(() => this._onError(E, 'ECONNECTION', false, 'CONN'));
+                }
+            });
+        } else if (this.secureConnection) {
+            // connect using tls
+            if (this.options.tls) {
+                Object.keys(this.options.tls).forEach(key => {
+                    opts[key] = this.options.tls[key];
+                });
+            }
+            return shared.resolveHostname(opts, (err, resolved) => {
+                if (err) {
+                    return setImmediate(() => this._onError(err, 'EDNS', false, 'CONN'));
+                }
+                this.logger.debug(
+                    {
+                        tnx: 'dns',
+                        source: opts.host,
+                        resolved: resolved.host,
+                        cached: !!resolved._cached
+                    },
+                    'Resolved %s as %s [cache %s]',
+                    opts.host,
+                    resolved.host,
+                    resolved._cached ? 'hit' : 'miss'
+                );
+                Object.keys(resolved).forEach(key => {
+                    if (key.charAt(0) !== '_' && resolved[key]) {
+                        opts[key] = resolved[key];
+                    }
+                });
+                try {
+                    this._socket = tls.connect(opts, () => {
+                        this._socket.setKeepAlive(true);
+                        this._onConnect();
+                    });
+                    setupConnectionHandlers();
+                } catch (E) {
+                    return setImmediate(() => this._onError(E, 'ECONNECTION', false, 'CONN'));
+                }
+            });
+        } else {
+            // connect using plaintext
+            return shared.resolveHostname(opts, (err, resolved) => {
+                if (err) {
+                    return setImmediate(() => this._onError(err, 'EDNS', false, 'CONN'));
+                }
+                this.logger.debug(
+                    {
+                        tnx: 'dns',
+                        source: opts.host,
+                        resolved: resolved.host,
+                        cached: !!resolved._cached
+                    },
+                    'Resolved %s as %s [cache %s]',
+                    opts.host,
+                    resolved.host,
+                    resolved._cached ? 'hit' : 'miss'
+                );
+                Object.keys(resolved).forEach(key => {
+                    if (key.charAt(0) !== '_' && resolved[key]) {
+                        opts[key] = resolved[key];
+                    }
+                });
+                try {
+                    this._socket = net.connect(opts, () => {
+                        this._socket.setKeepAlive(true);
+                        this._onConnect();
+                    });
+                    setupConnectionHandlers();
+                } catch (E) {
+                    return setImmediate(() => this._onError(E, 'ECONNECTION', false, 'CONN'));
+                }
+            });
+        }
+    }
+
+    /**
+     * Sends QUIT
+     */
+    quit() {
+        this._sendCommand('QUIT');
+        this._responseActions.push(this.close);
+    }
+
+    /**
+     * Closes the connection to the server
+     */
+    close() {
+        clearTimeout(this._connectionTimeout);
+        clearTimeout(this._greetingTimeout);
+        this._responseActions = [];
+
+        // allow to run this function only once
+        if (this._closing) {
+            return;
+        }
+        this._closing = true;
+
+        let closeMethod = 'end';
+
+        if (this.stage === 'init') {
+            // Close the socket immediately when connection timed out
+            closeMethod = 'destroy';
+        }
+
+        this.logger.debug(
+            {
+                tnx: 'smtp'
+            },
+            'Closing connection to the server using "%s"',
+            closeMethod
+        );
+
+        let socket = (this._socket && this._socket.socket) || this._socket;
+
+        if (socket && !socket.destroyed) {
+            try {
+                this._socket[closeMethod]();
+            } catch (E) {
+                // just ignore
+            }
+        }
+
+        this._destroy();
+    }
+
+    /**
+     * Authenticate user
+     */
+    login(authData, callback) {
+        const isDestroyedMessage = this._isDestroyedMessage('login');
+        if (isDestroyedMessage) {
+            return callback(this._formatError(isDestroyedMessage, 'ECONNECTION', false, 'API'));
+        }
+
+        this._auth = authData || {};
+        // Select SASL authentication method
+        this._authMethod =
+            (this._auth.method || '')
+                .toString()
+                .trim()
+                .toUpperCase() || false;
+
+        if (!this._authMethod && this._auth.oauth2 && !this._auth.credentials) {
+            this._authMethod = 'XOAUTH2';
+        } else if (!this._authMethod || (this._authMethod === 'XOAUTH2' && !this._auth.oauth2)) {
+            // use first supported
+            this._authMethod = (this._supportedAuth[0] || 'PLAIN').toUpperCase().trim();
+        }
+
+        if (this._authMethod !== 'XOAUTH2' && (!this._auth.credentials || !this._auth.credentials.user || !this._auth.credentials.pass)) {
+            if (this._auth.user && this._auth.pass) {
+                this._auth.credentials = {
+                    user: this._auth.user,
+                    pass: this._auth.pass,
+                    options: this._auth.options
+                };
+            } else {
+                return callback(this._formatError('Missing credentials for "' + this._authMethod + '"', 'EAUTH', false, 'API'));
+            }
+        }
+
+        if (this.customAuth.has(this._authMethod)) {
+            let handler = this.customAuth.get(this._authMethod);
+            let lastResponse;
+            let returned = false;
+
+            let resolve = () => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                this.logger.info(
+                    {
+                        tnx: 'smtp',
+                        username: this._auth.user,
+                        action: 'authenticated',
+                        method: this._authMethod
+                    },
+                    'User %s authenticated',
+                    JSON.stringify(this._auth.user)
+                );
+                this.authenticated = true;
+                callback(null, true);
+            };
+
+            let reject = err => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                callback(this._formatError(err, 'EAUTH', lastResponse, 'AUTH ' + this._authMethod));
+            };
+
+            let handlerResponse = handler({
+                auth: this._auth,
+                method: this._authMethod,
+
+                extensions: [].concat(this._supportedExtensions),
+                authMethods: [].concat(this._supportedAuth),
+                maxAllowedSize: this._maxAllowedSize || false,
+
+                sendCommand: (cmd, done) => {
+                    let promise;
+
+                    if (!done) {
+                        promise = new Promise((resolve, reject) => {
+                            done = shared.callbackPromise(resolve, reject);
+                        });
+                    }
+
+                    this._responseActions.push(str => {
+                        lastResponse = str;
+
+                        let codes = str.match(/^(\d+)(?:\s(\d+\.\d+\.\d+))?\s/);
+                        let data = {
+                            command: cmd,
+                            response: str
+                        };
+                        if (codes) {
+                            data.status = Number(codes[1]) || 0;
+                            if (codes[2]) {
+                                data.code = codes[2];
+                            }
+                            data.text = str.substr(codes[0].length);
+                        } else {
+                            data.text = str;
+                            data.status = 0; // just in case we need to perform numeric comparisons
+                        }
+                        done(null, data);
+                    });
+                    setImmediate(() => this._sendCommand(cmd));
+
+                    return promise;
+                },
+
+                resolve,
+                reject
+            });
+
+            if (handlerResponse && typeof handlerResponse.catch === 'function') {
+                // a promise was returned
+                handlerResponse.then(resolve).catch(reject);
+            }
+
+            return;
+        }
+
+        switch (this._authMethod) {
+            case 'XOAUTH2':
+                this._handleXOauth2Token(false, callback);
+                return;
+            case 'LOGIN':
+                this._responseActions.push(str => {
+                    this._actionAUTH_LOGIN_USER(str, callback);
+                });
+                this._sendCommand('AUTH LOGIN');
+                return;
+            case 'PLAIN':
+                this._responseActions.push(str => {
+                    this._actionAUTHComplete(str, callback);
+                });
+                this._sendCommand(
+                    'AUTH PLAIN ' +
+                        Buffer.from(
+                            //this._auth.user+'\u0000'+
+                            '\u0000' + // skip authorization identity as it causes problems with some servers
+                                this._auth.credentials.user +
+                                '\u0000' +
+                                this._auth.credentials.pass,
+                            'utf-8'
+                        ).toString('base64')
+                );
+                return;
+            case 'CRAM-MD5':
+                this._responseActions.push(str => {
+                    this._actionAUTH_CRAM_MD5(str, callback);
+                });
+                this._sendCommand('AUTH CRAM-MD5');
+                return;
+        }
+
+        return callback(this._formatError('Unknown authentication method "' + this._authMethod + '"', 'EAUTH', false, 'API'));
+    }
+
+    /**
+     * Sends a message
+     *
+     * @param {Object} envelope Envelope object, {from: addr, to: [addr]}
+     * @param {Object} message String, Buffer or a Stream
+     * @param {Function} callback Callback to return once sending is completed
+     */
+    send(envelope, message, done) {
+        if (!message) {
+            return done(this._formatError('Empty message', 'EMESSAGE', false, 'API'));
+        }
+
+        const isDestroyedMessage = this._isDestroyedMessage('send message');
+        if (isDestroyedMessage) {
+            return done(this._formatError(isDestroyedMessage, 'ECONNECTION', false, 'API'));
+        }
+
+        // reject larger messages than allowed
+        if (this._maxAllowedSize && envelope.size > this._maxAllowedSize) {
+            return setImmediate(() => {
+                done(this._formatError('Message size larger than allowed ' + this._maxAllowedSize, 'EMESSAGE', false, 'MAIL FROM'));
+            });
+        }
+
+        // ensure that callback is only called once
+        let returned = false;
+        let callback = function() {
+            if (returned) {
+                return;
+            }
+            returned = true;
+
+            done(...arguments);
+        };
+
+        if (typeof message.on === 'function') {
+            message.on('error', err => callback(this._formatError(err, 'ESTREAM', false, 'API')));
+        }
+
+        let startTime = Date.now();
+        this._setEnvelope(envelope, (err, info) => {
+            if (err) {
+                return callback(err);
+            }
+            let envelopeTime = Date.now();
+            let stream = this._createSendStream((err, str) => {
+                if (err) {
+                    return callback(err);
+                }
+
+                info.envelopeTime = envelopeTime - startTime;
+                info.messageTime = Date.now() - envelopeTime;
+                info.messageSize = stream.outByteCount;
+                info.response = str;
+
+                return callback(null, info);
+            });
+            if (typeof message.pipe === 'function') {
+                message.pipe(stream);
+            } else {
+                stream.write(message);
+                stream.end();
+            }
+        });
+    }
+
+    /**
+     * Resets connection state
+     *
+     * @param {Function} callback Callback to return once connection is reset
+     */
+    reset(callback) {
+        this._sendCommand('RSET');
+        this._responseActions.push(str => {
+            if (str.charAt(0) !== '2') {
+                return callback(this._formatError('Could not reset session state. response=' + str, 'EPROTOCOL', str, 'RSET'));
+            }
+            this._envelope = false;
+            return callback(null, true);
+        });
+    }
+
+    /**
+     * Connection listener that is run when the connection to
+     * the server is opened
+     *
+     * @event
+     */
+    _onConnect() {
+        clearTimeout(this._connectionTimeout);
+
+        this.logger.info(
+            {
+                tnx: 'network',
+                localAddress: this._socket.localAddress,
+                localPort: this._socket.localPort,
+                remoteAddress: this._socket.remoteAddress,
+                remotePort: this._socket.remotePort
+            },
+            '%s established to %s:%s',
+            this.secure ? 'Secure connection' : 'Connection',
+            this._socket.remoteAddress,
+            this._socket.remotePort
+        );
+
+        if (this._destroyed) {
+            // Connection was established after we already had canceled it
+            this.close();
+            return;
+        }
+
+        this.stage = 'connected';
+
+        // clear existing listeners for the socket
+        this._socket.removeListener('data', this._onSocketData);
+        this._socket.removeListener('timeout', this._onSocketTimeout);
+        this._socket.removeListener('close', this._onSocketClose);
+        this._socket.removeListener('end', this._onSocketEnd);
+
+        this._socket.on('data', this._onSocketData);
+        this._socket.once('close', this._onSocketClose);
+        this._socket.once('end', this._onSocketEnd);
+
+        this._socket.setTimeout(this.options.socketTimeout || SOCKET_TIMEOUT);
+        this._socket.on('timeout', this._onSocketTimeout);
+
+        this._greetingTimeout = setTimeout(() => {
+            // if still waiting for greeting, give up
+            if (this._socket && !this._destroyed && this._responseActions[0] === this._actionGreeting) {
+                this._onError('Greeting never received', 'ETIMEDOUT', false, 'CONN');
+            }
+        }, this.options.greetingTimeout || GREETING_TIMEOUT);
+
+        this._responseActions.push(this._actionGreeting);
+
+        // we have a 'data' listener set up so resume socket if it was paused
+        this._socket.resume();
+    }
+
+    /**
+     * 'data' listener for data coming from the server
+     *
+     * @event
+     * @param {Buffer} chunk Data chunk coming from the server
+     */
+    _onData(chunk) {
+        if (this._destroyed || !chunk || !chunk.length) {
+            return;
+        }
+
+        let data = (chunk || '').toString('binary');
+        let lines = (this._remainder + data).split(/\r?\n/);
+        let lastline;
+
+        this._remainder = lines.pop();
+
+        for (let i = 0, len = lines.length; i < len; i++) {
+            if (this._responseQueue.length) {
+                lastline = this._responseQueue[this._responseQueue.length - 1];
+                if (/^\d+-/.test(lastline.split('\n').pop())) {
+                    this._responseQueue[this._responseQueue.length - 1] += '\n' + lines[i];
+                    continue;
+                }
+            }
+            this._responseQueue.push(lines[i]);
+        }
+
+        if (this._responseQueue.length) {
+            lastline = this._responseQueue[this._responseQueue.length - 1];
+            if (/^\d+-/.test(lastline.split('\n').pop())) {
+                return;
+            }
+        }
+
+        this._processResponse();
+    }
+
+    /**
+     * 'error' listener for the socket
+     *
+     * @event
+     * @param {Error} err Error object
+     * @param {String} type Error name
+     */
+    _onError(err, type, data, command) {
+        clearTimeout(this._connectionTimeout);
+        clearTimeout(this._greetingTimeout);
+
+        if (this._destroyed) {
+            // just ignore, already closed
+            // this might happen when a socket is canceled because of reached timeout
+            // but the socket timeout error itself receives only after
+            return;
+        }
+
+        err = this._formatError(err, type, data, command);
+
+        this.logger.error(data, err.message);
+
+        this.emit('error', err);
+        this.close();
+    }
+
+    _formatError(message, type, response, command) {
+        let err;
+
+        if (/Error\]$/i.test(Object.prototype.toString.call(message))) {
+            err = message;
+        } else {
+            err = new Error(message);
+        }
+
+        if (type && type !== 'Error') {
+            err.code = type;
+        }
+
+        if (response) {
+            err.response = response;
+            err.message += ': ' + response;
+        }
+
+        let responseCode = (typeof response === 'string' && Number((response.match(/^\d+/) || [])[0])) || false;
+        if (responseCode) {
+            err.responseCode = responseCode;
+        }
+
+        if (command) {
+            err.command = command;
+        }
+
+        return err;
+    }
+
+    /**
+     * 'close' listener for the socket
+     *
+     * @event
+     */
+    _onClose() {
+        this.logger.info(
+            {
+                tnx: 'network'
+            },
+            'Connection closed'
+        );
+
+        if (this.upgrading && !this._destroyed) {
+            return this._onError(new Error('Connection closed unexpectedly'), 'ETLS', false, 'CONN');
+        } else if (![this._actionGreeting, this.close].includes(this._responseActions[0]) && !this._destroyed) {
+            return this._onError(new Error('Connection closed unexpectedly'), 'ECONNECTION', false, 'CONN');
+        }
+
+        this._destroy();
+    }
+
+    /**
+     * 'end' listener for the socket
+     *
+     * @event
+     */
+    _onEnd() {
+        if (this._socket && !this._socket.destroyed) {
+            this._socket.destroy();
+        }
+    }
+
+    /**
+     * 'timeout' listener for the socket
+     *
+     * @event
+     */
+    _onTimeout() {
+        return this._onError(new Error('Timeout'), 'ETIMEDOUT', false, 'CONN');
+    }
+
+    /**
+     * Destroys the client, emits 'end'
+     */
+    _destroy() {
+        if (this._destroyed) {
+            return;
+        }
+        this._destroyed = true;
+        this.emit('end');
+    }
+
+    /**
+     * Upgrades the connection to TLS
+     *
+     * @param {Function} callback Callback function to run when the connection
+     *        has been secured
+     */
+    _upgradeConnection(callback) {
+        // do not remove all listeners or it breaks node v0.10 as there's
+        // apparently a 'finish' event set that would be cleared as well
+
+        // we can safely keep 'error', 'end', 'close' etc. events
+        this._socket.removeListener('data', this._onSocketData); // incoming data is going to be gibberish from this point onwards
+        this._socket.removeListener('timeout', this._onSocketTimeout); // timeout will be re-set for the new socket object
+
+        let socketPlain = this._socket;
+        let opts = {
+            socket: this._socket,
+            host: this.host
+        };
+
+        Object.keys(this.options.tls || {}).forEach(key => {
+            opts[key] = this.options.tls[key];
+        });
+
+        this.upgrading = true;
+        this._socket = tls.connect(opts, () => {
+            this.secure = true;
+            this.upgrading = false;
+            this._socket.on('data', this._onSocketData);
+
+            socketPlain.removeListener('close', this._onSocketClose);
+            socketPlain.removeListener('end', this._onSocketEnd);
+
+            return callback(null, true);
+        });
+
+        this._socket.on('error', this._onSocketError);
+        this._socket.once('close', this._onSocketClose);
+        this._socket.once('end', this._onSocketEnd);
+
+        this._socket.setTimeout(this.options.socketTimeout || SOCKET_TIMEOUT); // 10 min.
+        this._socket.on('timeout', this._onSocketTimeout);
+
+        // resume in case the socket was paused
+        socketPlain.resume();
+    }
+
+    /**
+     * Processes queued responses from the server
+     *
+     * @param {Boolean} force If true, ignores _processing flag
+     */
+    _processResponse() {
+        if (!this._responseQueue.length) {
+            return false;
+        }
+
+        let str = (this.lastServerResponse = (this._responseQueue.shift() || '').toString());
+
+        if (/^\d+-/.test(str.split('\n').pop())) {
+            // keep waiting for the final part of multiline response
+            return;
+        }
+
+        if (this.options.debug || this.options.transactionLog) {
+            this.logger.debug(
+                {
+                    tnx: 'server'
+                },
+                str.replace(/\r?\n$/, '')
+            );
+        }
+
+        if (!str.trim()) {
+            // skip unexpected empty lines
+            setImmediate(() => this._processResponse(true));
+        }
+
+        let action = this._responseActions.shift();
+
+        if (typeof action === 'function') {
+            action.call(this, str);
+            setImmediate(() => this._processResponse(true));
+        } else {
+            return this._onError(new Error('Unexpected Response'), 'EPROTOCOL', str, 'CONN');
+        }
+    }
+
+    /**
+     * Send a command to the server, append \r\n
+     *
+     * @param {String} str String to be sent to the server
+     */
+    _sendCommand(str) {
+        if (this._destroyed) {
+            // Connection already closed, can't send any more data
+            return;
+        }
+
+        if (this._socket.destroyed) {
+            return this.close();
+        }
+
+        if (this.options.debug || this.options.transactionLog) {
+            this.logger.debug(
+                {
+                    tnx: 'client'
+                },
+                (str || '').toString().replace(/\r?\n$/, '')
+            );
+        }
+
+        this._socket.write(Buffer.from(str + '\r\n', 'utf-8'));
+    }
+
+    /**
+     * Initiates a new message by submitting envelope data, starting with
+     * MAIL FROM: command
+     *
+     * @param {Object} envelope Envelope object in the form of
+     *        {from:'...', to:['...']}
+     *        or
+     *        {from:{address:'...',name:'...'}, to:[address:'...',name:'...']}
+     */
+    _setEnvelope(envelope, callback) {
+        let args = [];
+        let useSmtpUtf8 = false;
+
+        this._envelope = envelope || {};
+        this._envelope.from = ((this._envelope.from && this._envelope.from.address) || this._envelope.from || '').toString().trim();
+
+        this._envelope.to = [].concat(this._envelope.to || []).map(to => ((to && to.address) || to || '').toString().trim());
+
+        if (!this._envelope.to.length) {
+            return callback(this._formatError('No recipients defined', 'EENVELOPE', false, 'API'));
+        }
+
+        if (this._envelope.from && /[\r\n<>]/.test(this._envelope.from)) {
+            return callback(this._formatError('Invalid sender ' + JSON.stringify(this._envelope.from), 'EENVELOPE', false, 'API'));
+        }
+
+        // check if the sender address uses only ASCII characters,
+        // otherwise require usage of SMTPUTF8 extension
+        if (/[\x80-\uFFFF]/.test(this._envelope.from)) {
+            useSmtpUtf8 = true;
+        }
+
+        for (let i = 0, len = this._envelope.to.length; i < len; i++) {
+            if (!this._envelope.to[i] || /[\r\n<>]/.test(this._envelope.to[i])) {
+                return callback(this._formatError('Invalid recipient ' + JSON.stringify(this._envelope.to[i]), 'EENVELOPE', false, 'API'));
+            }
+
+            // check if the recipients addresses use only ASCII characters,
+            // otherwise require usage of SMTPUTF8 extension
+            if (/[\x80-\uFFFF]/.test(this._envelope.to[i])) {
+                useSmtpUtf8 = true;
+            }
+        }
+
+        // clone the recipients array for latter manipulation
+        this._envelope.rcptQueue = JSON.parse(JSON.stringify(this._envelope.to || []));
+        this._envelope.rejected = [];
+        this._envelope.rejectedErrors = [];
+        this._envelope.accepted = [];
+
+        if (this._envelope.dsn) {
+            try {
+                this._envelope.dsn = this._setDsnEnvelope(this._envelope.dsn);
+            } catch (err) {
+                return callback(this._formatError('Invalid DSN ' + err.message, 'EENVELOPE', false, 'API'));
+            }
+        }
+
+        this._responseActions.push(str => {
+            this._actionMAIL(str, callback);
+        });
+
+        // If the server supports SMTPUTF8 and the envelope includes an internationalized
+        // email address then append SMTPUTF8 keyword to the MAIL FROM command
+        if (useSmtpUtf8 && this._supportedExtensions.includes('SMTPUTF8')) {
+            args.push('SMTPUTF8');
+            this._usingSmtpUtf8 = true;
+        }
+
+        // If the server supports 8BITMIME and the message might contain non-ascii bytes
+        // then append the 8BITMIME keyword to the MAIL FROM command
+        if (this._envelope.use8BitMime && this._supportedExtensions.includes('8BITMIME')) {
+            args.push('BODY=8BITMIME');
+            this._using8BitMime = true;
+        }
+
+        if (this._envelope.size && this._supportedExtensions.includes('SIZE')) {
+            args.push('SIZE=' + this._envelope.size);
+        }
+
+        // If the server supports DSN and the envelope includes an DSN prop
+        // then append DSN params to the MAIL FROM command
+        if (this._envelope.dsn && this._supportedExtensions.includes('DSN')) {
+            if (this._envelope.dsn.ret) {
+                args.push('RET=' + shared.encodeXText(this._envelope.dsn.ret));
+            }
+            if (this._envelope.dsn.envid) {
+                args.push('ENVID=' + shared.encodeXText(this._envelope.dsn.envid));
+            }
+        }
+
+        this._sendCommand('MAIL FROM:<' + this._envelope.from + '>' + (args.length ? ' ' + args.join(' ') : ''));
+    }
+
+    _setDsnEnvelope(params) {
+        let ret = (params.ret || params.return || '').toString().toUpperCase() || null;
+        if (ret) {
+            switch (ret) {
+                case 'HDRS':
+                case 'HEADERS':
+                    ret = 'HDRS';
+                    break;
+                case 'FULL':
+                case 'BODY':
+                    ret = 'FULL';
+                    break;
+            }
+        }
+
+        if (ret && !['FULL', 'HDRS'].includes(ret)) {
+            throw new Error('ret: ' + JSON.stringify(ret));
+        }
+
+        let envid = (params.envid || params.id || '').toString() || null;
+
+        let notify = params.notify || null;
+        if (notify) {
+            if (typeof notify === 'string') {
+                notify = notify.split(',');
+            }
+            notify = notify.map(n => n.trim().toUpperCase());
+            let validNotify = ['NEVER', 'SUCCESS', 'FAILURE', 'DELAY'];
+            let invaliNotify = notify.filter(n => !validNotify.includes(n));
+            if (invaliNotify.length || (notify.length > 1 && notify.includes('NEVER'))) {
+                throw new Error('notify: ' + JSON.stringify(notify.join(',')));
+            }
+            notify = notify.join(',');
+        }
+
+        let orcpt = (params.orcpt || params.recipient || '').toString() || null;
+        if (orcpt && orcpt.indexOf(';') < 0) {
+            orcpt = 'rfc822;' + orcpt;
+        }
+
+        return {
+            ret,
+            envid,
+            notify,
+            orcpt
+        };
+    }
+
+    _getDsnRcptToArgs() {
+        let args = [];
+        // If the server supports DSN and the envelope includes an DSN prop
+        // then append DSN params to the RCPT TO command
+        if (this._envelope.dsn && this._supportedExtensions.includes('DSN')) {
+            if (this._envelope.dsn.notify) {
+                args.push('NOTIFY=' + shared.encodeXText(this._envelope.dsn.notify));
+            }
+            if (this._envelope.dsn.orcpt) {
+                args.push('ORCPT=' + shared.encodeXText(this._envelope.dsn.orcpt));
+            }
+        }
+        return args.length ? ' ' + args.join(' ') : '';
+    }
+
+    _createSendStream(callback) {
+        let dataStream = new DataStream();
+        let logStream;
+
+        if (this.options.lmtp) {
+            this._envelope.accepted.forEach((recipient, i) => {
+                let final = i === this._envelope.accepted.length - 1;
+                this._responseActions.push(str => {
+                    this._actionLMTPStream(recipient, final, str, callback);
+                });
+            });
+        } else {
+            this._responseActions.push(str => {
+                this._actionSMTPStream(str, callback);
+            });
+        }
+
+        dataStream.pipe(this._socket, {
+            end: false
+        });
+
+        if (this.options.debug) {
+            logStream = new PassThrough();
+            logStream.on('readable', () => {
+                let chunk;
+                while ((chunk = logStream.read())) {
+                    this.logger.debug(
+                        {
+                            tnx: 'message'
+                        },
+                        chunk.toString('binary').replace(/\r?\n$/, '')
+                    );
+                }
+            });
+            dataStream.pipe(logStream);
+        }
+
+        dataStream.once('end', () => {
+            this.logger.info(
+                {
+                    tnx: 'message',
+                    inByteCount: dataStream.inByteCount,
+                    outByteCount: dataStream.outByteCount
+                },
+                '<%s bytes encoded mime message (source size %s bytes)>',
+                dataStream.outByteCount,
+                dataStream.inByteCount
+            );
+        });
+
+        return dataStream;
+    }
+
+    /** ACTIONS **/
+
+    /**
+     * Will be run after the connection is created and the server sends
+     * a greeting. If the incoming message starts with 220 initiate
+     * SMTP session by sending EHLO command
+     *
+     * @param {String} str Message from the server
+     */
+    _actionGreeting(str) {
+        clearTimeout(this._greetingTimeout);
+
+        if (str.substr(0, 3) !== '220') {
+            this._onError(new Error('Invalid greeting. response=' + str), 'EPROTOCOL', str, 'CONN');
+            return;
+        }
+
+        if (this.options.lmtp) {
+            this._responseActions.push(this._actionLHLO);
+            this._sendCommand('LHLO ' + this.name);
+        } else {
+            this._responseActions.push(this._actionEHLO);
+            this._sendCommand('EHLO ' + this.name);
+        }
+    }
+
+    /**
+     * Handles server response for LHLO command. If it yielded in
+     * error, emit 'error', otherwise treat this as an EHLO response
+     *
+     * @param {String} str Message from the server
+     */
+    _actionLHLO(str) {
+        if (str.charAt(0) !== '2') {
+            this._onError(new Error('Invalid LHLO. response=' + str), 'EPROTOCOL', str, 'LHLO');
+            return;
+        }
+
+        this._actionEHLO(str);
+    }
+
+    /**
+     * Handles server response for EHLO command. If it yielded in
+     * error, try HELO instead, otherwise initiate TLS negotiation
+     * if STARTTLS is supported by the server or move into the
+     * authentication phase.
+     *
+     * @param {String} str Message from the server
+     */
+    _actionEHLO(str) {
+        let match;
+
+        if (str.substr(0, 3) === '421') {
+            this._onError(new Error('Server terminates connection. response=' + str), 'ECONNECTION', str, 'EHLO');
+            return;
+        }
+
+        if (str.charAt(0) !== '2') {
+            if (this.options.requireTLS) {
+                this._onError(new Error('EHLO failed but HELO does not support required STARTTLS. response=' + str), 'ECONNECTION', str, 'EHLO');
+                return;
+            }
+
+            // Try HELO instead
+            this._responseActions.push(this._actionHELO);
+            this._sendCommand('HELO ' + this.name);
+            return;
+        }
+
+        // Detect if the server supports STARTTLS
+        if (!this.secure && !this.options.ignoreTLS && (/[ -]STARTTLS\b/im.test(str) || this.options.requireTLS)) {
+            this._sendCommand('STARTTLS');
+            this._responseActions.push(this._actionSTARTTLS);
+            return;
+        }
+
+        // Detect if the server supports SMTPUTF8
+        if (/[ -]SMTPUTF8\b/im.test(str)) {
+            this._supportedExtensions.push('SMTPUTF8');
+        }
+
+        // Detect if the server supports DSN
+        if (/[ -]DSN\b/im.test(str)) {
+            this._supportedExtensions.push('DSN');
+        }
+
+        // Detect if the server supports 8BITMIME
+        if (/[ -]8BITMIME\b/im.test(str)) {
+            this._supportedExtensions.push('8BITMIME');
+        }
+
+        // Detect if the server supports PIPELINING
+        if (/[ -]PIPELINING\b/im.test(str)) {
+            this._supportedExtensions.push('PIPELINING');
+        }
+
+        // Detect if the server supports AUTH
+        if (/[ -]AUTH\b/i.test(str)) {
+            this.allowsAuth = true;
+        }
+
+        // Detect if the server supports PLAIN auth
+        if (/[ -]AUTH(?:(\s+|=)[^\n]*\s+|\s+|=)PLAIN/i.test(str)) {
+            this._supportedAuth.push('PLAIN');
+        }
+
+        // Detect if the server supports LOGIN auth
+        if (/[ -]AUTH(?:(\s+|=)[^\n]*\s+|\s+|=)LOGIN/i.test(str)) {
+            this._supportedAuth.push('LOGIN');
+        }
+
+        // Detect if the server supports CRAM-MD5 auth
+        if (/[ -]AUTH(?:(\s+|=)[^\n]*\s+|\s+|=)CRAM-MD5/i.test(str)) {
+            this._supportedAuth.push('CRAM-MD5');
+        }
+
+        // Detect if the server supports XOAUTH2 auth
+        if (/[ -]AUTH(?:(\s+|=)[^\n]*\s+|\s+|=)XOAUTH2/i.test(str)) {
+            this._supportedAuth.push('XOAUTH2');
+        }
+
+        // Detect if the server supports SIZE extensions (and the max allowed size)
+        if ((match = str.match(/[ -]SIZE(?:[ \t]+(\d+))?/im))) {
+            this._supportedExtensions.push('SIZE');
+            this._maxAllowedSize = Number(match[1]) || 0;
+        }
+
+        this.emit('connect');
+    }
+
+    /**
+     * Handles server response for HELO command. If it yielded in
+     * error, emit 'error', otherwise move into the authentication phase.
+     *
+     * @param {String} str Message from the server
+     */
+    _actionHELO(str) {
+        if (str.charAt(0) !== '2') {
+            this._onError(new Error('Invalid HELO. response=' + str), 'EPROTOCOL', str, 'HELO');
+            return;
+        }
+
+        // assume that authentication is enabled (most probably is not though)
+        this.allowsAuth = true;
+
+        this.emit('connect');
+    }
+
+    /**
+     * Handles server response for STARTTLS command. If there's an error
+     * try HELO instead, otherwise initiate TLS upgrade. If the upgrade
+     * succeedes restart the EHLO
+     *
+     * @param {String} str Message from the server
+     */
+    _actionSTARTTLS(str) {
+        if (str.charAt(0) !== '2') {
+            if (this.options.opportunisticTLS) {
+                this.logger.info(
+                    {
+                        tnx: 'smtp'
+                    },
+                    'Failed STARTTLS upgrade, continuing unencrypted'
+                );
+                return this.emit('connect');
+            }
+            this._onError(new Error('Error upgrading connection with STARTTLS'), 'ETLS', str, 'STARTTLS');
+            return;
+        }
+
+        this._upgradeConnection((err, secured) => {
+            if (err) {
+                this._onError(new Error('Error initiating TLS - ' + (err.message || err)), 'ETLS', false, 'STARTTLS');
+                return;
+            }
+
+            this.logger.info(
+                {
+                    tnx: 'smtp'
+                },
+                'Connection upgraded with STARTTLS'
+            );
+
+            if (secured) {
+                // restart session
+                if (this.options.lmtp) {
+                    this._responseActions.push(this._actionLHLO);
+                    this._sendCommand('LHLO ' + this.name);
+                } else {
+                    this._responseActions.push(this._actionEHLO);
+                    this._sendCommand('EHLO ' + this.name);
+                }
+            } else {
+                this.emit('connect');
+            }
+        });
+    }
+
+    /**
+     * Handle the response for AUTH LOGIN command. We are expecting
+     * '334 VXNlcm5hbWU6' (base64 for 'Username:'). Data to be sent as
+     * response needs to be base64 encoded username. We do not need
+     * exact match but settle with 334 response in general as some
+     * hosts invalidly use a longer message than VXNlcm5hbWU6
+     *
+     * @param {String} str Message from the server
+     */
+    _actionAUTH_LOGIN_USER(str, callback) {
+        if (!/^334[ -]/.test(str)) {
+            // expecting '334 VXNlcm5hbWU6'
+            callback(this._formatError('Invalid login sequence while waiting for "334 VXNlcm5hbWU6"', 'EAUTH', str, 'AUTH LOGIN'));
+            return;
+        }
+
+        this._responseActions.push(str => {
+            this._actionAUTH_LOGIN_PASS(str, callback);
+        });
+
+        this._sendCommand(Buffer.from(this._auth.credentials.user + '', 'utf-8').toString('base64'));
+    }
+
+    /**
+     * Handle the response for AUTH CRAM-MD5 command. We are expecting
+     * '334 <challenge string>'. Data to be sent as response needs to be
+     * base64 decoded challenge string, MD5 hashed using the password as
+     * a HMAC key, prefixed by the username and a space, and finally all
+     * base64 encoded again.
+     *
+     * @param {String} str Message from the server
+     */
+    _actionAUTH_CRAM_MD5(str, callback) {
+        let challengeMatch = str.match(/^334\s+(.+)$/);
+        let challengeString = '';
+
+        if (!challengeMatch) {
+            return callback(this._formatError('Invalid login sequence while waiting for server challenge string', 'EAUTH', str, 'AUTH CRAM-MD5'));
+        } else {
+            challengeString = challengeMatch[1];
+        }
+
+        // Decode from base64
+        let base64decoded = Buffer.from(challengeString, 'base64').toString('ascii'),
+            hmac_md5 = crypto.createHmac('md5', this._auth.credentials.pass);
+
+        hmac_md5.update(base64decoded);
+
+        let hex_hmac = hmac_md5.digest('hex');
+        let prepended = this._auth.credentials.user + ' ' + hex_hmac;
+
+        this._responseActions.push(str => {
+            this._actionAUTH_CRAM_MD5_PASS(str, callback);
+        });
+
+        this._sendCommand(Buffer.from(prepended).toString('base64'));
+    }
+
+    /**
+     * Handles the response to CRAM-MD5 authentication, if there's no error,
+     * the user can be considered logged in. Start waiting for a message to send
+     *
+     * @param {String} str Message from the server
+     */
+    _actionAUTH_CRAM_MD5_PASS(str, callback) {
+        if (!str.match(/^235\s+/)) {
+            return callback(this._formatError('Invalid login sequence while waiting for "235"', 'EAUTH', str, 'AUTH CRAM-MD5'));
+        }
+
+        this.logger.info(
+            {
+                tnx: 'smtp',
+                username: this._auth.user,
+                action: 'authenticated',
+                method: this._authMethod
+            },
+            'User %s authenticated',
+            JSON.stringify(this._auth.user)
+        );
+        this.authenticated = true;
+        callback(null, true);
+    }
+
+    /**
+     * Handle the response for AUTH LOGIN command. We are expecting
+     * '334 UGFzc3dvcmQ6' (base64 for 'Password:'). Data to be sent as
+     * response needs to be base64 encoded password.
+     *
+     * @param {String} str Message from the server
+     */
+    _actionAUTH_LOGIN_PASS(str, callback) {
+        if (!/^334[ -]/.test(str)) {
+            // expecting '334 UGFzc3dvcmQ6'
+            return callback(this._formatError('Invalid login sequence while waiting for "334 UGFzc3dvcmQ6"', 'EAUTH', str, 'AUTH LOGIN'));
+        }
+
+        this._responseActions.push(str => {
+            this._actionAUTHComplete(str, callback);
+        });
+
+        this._sendCommand(Buffer.from(this._auth.credentials.pass + '', 'utf-8').toString('base64'));
+    }
+
+    /**
+     * Handles the response for authentication, if there's no error,
+     * the user can be considered logged in. Start waiting for a message to send
+     *
+     * @param {String} str Message from the server
+     */
+    _actionAUTHComplete(str, isRetry, callback) {
+        if (!callback && typeof isRetry === 'function') {
+            callback = isRetry;
+            isRetry = false;
+        }
+
+        if (str.substr(0, 3) === '334') {
+            this._responseActions.push(str => {
+                if (isRetry || this._authMethod !== 'XOAUTH2') {
+                    this._actionAUTHComplete(str, true, callback);
+                } else {
+                    // fetch a new OAuth2 access token
+                    setImmediate(() => this._handleXOauth2Token(true, callback));
+                }
+            });
+            this._sendCommand('');
+            return;
+        }
+
+        if (str.charAt(0) !== '2') {
+            this.logger.info(
+                {
+                    tnx: 'smtp',
+                    username: this._auth.user,
+                    action: 'authfail',
+                    method: this._authMethod
+                },
+                'User %s failed to authenticate',
+                JSON.stringify(this._auth.user)
+            );
+            return callback(this._formatError('Invalid login', 'EAUTH', str, 'AUTH ' + this._authMethod));
+        }
+
+        this.logger.info(
+            {
+                tnx: 'smtp',
+                username: this._auth.user,
+                action: 'authenticated',
+                method: this._authMethod
+            },
+            'User %s authenticated',
+            JSON.stringify(this._auth.user)
+        );
+        this.authenticated = true;
+        callback(null, true);
+    }
+
+    /**
+     * Handle response for a MAIL FROM: command
+     *
+     * @param {String} str Message from the server
+     */
+    _actionMAIL(str, callback) {
+        let message, curRecipient;
+        if (Number(str.charAt(0)) !== 2) {
+            if (this._usingSmtpUtf8 && /^550 /.test(str) && /[\x80-\uFFFF]/.test(this._envelope.from)) {
+                message = 'Internationalized mailbox name not allowed';
+            } else {
+                message = 'Mail command failed';
+            }
+            return callback(this._formatError(message, 'EENVELOPE', str, 'MAIL FROM'));
+        }
+
+        if (!this._envelope.rcptQueue.length) {
+            return callback(this._formatError('Can\x27t send mail - no recipients defined', 'EENVELOPE', false, 'API'));
+        } else {
+            this._recipientQueue = [];
+
+            if (this._supportedExtensions.includes('PIPELINING')) {
+                while (this._envelope.rcptQueue.length) {
+                    curRecipient = this._envelope.rcptQueue.shift();
+                    this._recipientQueue.push(curRecipient);
+                    this._responseActions.push(str => {
+                        this._actionRCPT(str, callback);
+                    });
+                    this._sendCommand('RCPT TO:<' + curRecipient + '>' + this._getDsnRcptToArgs());
+                }
+            } else {
+                curRecipient = this._envelope.rcptQueue.shift();
+                this._recipientQueue.push(curRecipient);
+                this._responseActions.push(str => {
+                    this._actionRCPT(str, callback);
+                });
+                this._sendCommand('RCPT TO:<' + curRecipient + '>' + this._getDsnRcptToArgs());
+            }
+        }
+    }
+
+    /**
+     * Handle response for a RCPT TO: command
+     *
+     * @param {String} str Message from the server
+     */
+    _actionRCPT(str, callback) {
+        let message,
+            err,
+            curRecipient = this._recipientQueue.shift();
+        if (Number(str.charAt(0)) !== 2) {
+            // this is a soft error
+            if (this._usingSmtpUtf8 && /^553 /.test(str) && /[\x80-\uFFFF]/.test(curRecipient)) {
+                message = 'Internationalized mailbox name not allowed';
+            } else {
+                message = 'Recipient command failed';
+            }
+            this._envelope.rejected.push(curRecipient);
+            // store error for the failed recipient
+            err = this._formatError(message, 'EENVELOPE', str, 'RCPT TO');
+            err.recipient = curRecipient;
+            this._envelope.rejectedErrors.push(err);
+        } else {
+            this._envelope.accepted.push(curRecipient);
+        }
+
+        if (!this._envelope.rcptQueue.length && !this._recipientQueue.length) {
+            if (this._envelope.rejected.length < this._envelope.to.length) {
+                this._responseActions.push(str => {
+                    this._actionDATA(str, callback);
+                });
+                this._sendCommand('DATA');
+            } else {
+                err = this._formatError('Can\x27t send mail - all recipients were rejected', 'EENVELOPE', str, 'RCPT TO');
+                err.rejected = this._envelope.rejected;
+                err.rejectedErrors = this._envelope.rejectedErrors;
+                return callback(err);
+            }
+        } else if (this._envelope.rcptQueue.length) {
+            curRecipient = this._envelope.rcptQueue.shift();
+            this._recipientQueue.push(curRecipient);
+            this._responseActions.push(str => {
+                this._actionRCPT(str, callback);
+            });
+            this._sendCommand('RCPT TO:<' + curRecipient + '>' + this._getDsnRcptToArgs());
+        }
+    }
+
+    /**
+     * Handle response for a DATA command
+     *
+     * @param {String} str Message from the server
+     */
+    _actionDATA(str, callback) {
+        // response should be 354 but according to this issue https://github.com/eleith/emailjs/issues/24
+        // some servers might use 250 instead, so lets check for 2 or 3 as the first digit
+        if (!/^[23]/.test(str)) {
+            return callback(this._formatError('Data command failed', 'EENVELOPE', str, 'DATA'));
+        }
+
+        let response = {
+            accepted: this._envelope.accepted,
+            rejected: this._envelope.rejected
+        };
+
+        if (this._envelope.rejectedErrors.length) {
+            response.rejectedErrors = this._envelope.rejectedErrors;
+        }
+
+        callback(null, response);
+    }
+
+    /**
+     * Handle response for a DATA stream when using SMTP
+     * We expect a single response that defines if the sending succeeded or failed
+     *
+     * @param {String} str Message from the server
+     */
+    _actionSMTPStream(str, callback) {
+        if (Number(str.charAt(0)) !== 2) {
+            // Message failed
+            return callback(this._formatError('Message failed', 'EMESSAGE', str, 'DATA'));
+        } else {
+            // Message sent succesfully
+            return callback(null, str);
+        }
+    }
+
+    /**
+     * Handle response for a DATA stream
+     * We expect a separate response for every recipient. All recipients can either
+     * succeed or fail separately
+     *
+     * @param {String} recipient The recipient this response applies to
+     * @param {Boolean} final Is this the final recipient?
+     * @param {String} str Message from the server
+     */
+    _actionLMTPStream(recipient, final, str, callback) {
+        let err;
+        if (Number(str.charAt(0)) !== 2) {
+            // Message failed
+            err = this._formatError('Message failed for recipient ' + recipient, 'EMESSAGE', str, 'DATA');
+            err.recipient = recipient;
+            this._envelope.rejected.push(recipient);
+            this._envelope.rejectedErrors.push(err);
+            for (let i = 0, len = this._envelope.accepted.length; i < len; i++) {
+                if (this._envelope.accepted[i] === recipient) {
+                    this._envelope.accepted.splice(i, 1);
+                }
+            }
+        }
+        if (final) {
+            return callback(null, str);
+        }
+    }
+
+    _handleXOauth2Token(isRetry, callback) {
+        this._auth.oauth2.getToken(isRetry, (err, accessToken) => {
+            if (err) {
+                this.logger.info(
+                    {
+                        tnx: 'smtp',
+                        username: this._auth.user,
+                        action: 'authfail',
+                        method: this._authMethod
+                    },
+                    'User %s failed to authenticate',
+                    JSON.stringify(this._auth.user)
+                );
+                return callback(this._formatError(err, 'EAUTH', false, 'AUTH XOAUTH2'));
+            }
+            this._responseActions.push(str => {
+                this._actionAUTHComplete(str, isRetry, callback);
+            });
+            this._sendCommand('AUTH XOAUTH2 ' + this._auth.oauth2.buildXOAuth2Token(accessToken));
+        });
+    }
+
+    /**
+     *
+     * @param {string} command
+     * @private
+     */
+    _isDestroyedMessage(command) {
+        if (this._destroyed) {
+            return 'Cannot ' + command + ' - smtp connection is already destroyed.';
+        }
+
+        if (this._socket) {
+            if (this._socket.destroyed) {
+                return 'Cannot ' + command + ' - smtp connection socket is already destroyed.';
+            }
+
+            if (!this._socket.writable) {
+                return 'Cannot ' + command + ' - smtp connection socket is already half-closed.';
+            }
+        }
+    }
+
+    _getHostname() {
+        // defaul hostname is machine hostname or [IP]
+        let defaultHostname = os.hostname() || '';
+
+        // ignore if not FQDN
+        if (defaultHostname.indexOf('.') < 0) {
+            defaultHostname = '[127.0.0.1]';
+        }
+
+        // IP should be enclosed in []
+        if (defaultHostname.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/)) {
+            defaultHostname = '[' + defaultHostname + ']';
+        }
+
+        return defaultHostname;
+    }
+}
+
+module.exports = SMTPConnection;
diff --git a/server/node_modules/nodemailer/lib/smtp-pool/index.js b/server/node_modules/nodemailer/lib/smtp-pool/index.js
new file mode 100644
index 0000000..47a6d48
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-pool/index.js
@@ -0,0 +1,641 @@
+'use strict';
+
+const EventEmitter = require('events');
+const PoolResource = require('./pool-resource');
+const SMTPConnection = require('../smtp-connection');
+const wellKnown = require('../well-known');
+const shared = require('../shared');
+const packageData = require('../../package.json');
+
+/**
+ * Creates a SMTP pool transport object for Nodemailer
+ *
+ * @constructor
+ * @param {Object} options SMTP Connection options
+ */
+class SMTPPool extends EventEmitter {
+    constructor(options) {
+        super();
+
+        options = options || {};
+        if (typeof options === 'string') {
+            options = {
+                url: options
+            };
+        }
+
+        let urlData;
+        let service = options.service;
+
+        if (typeof options.getSocket === 'function') {
+            this.getSocket = options.getSocket;
+        }
+
+        if (options.url) {
+            urlData = shared.parseConnectionUrl(options.url);
+            service = service || urlData.service;
+        }
+
+        this.options = shared.assign(
+            false, // create new object
+            options, // regular options
+            urlData, // url options
+            service && wellKnown(service) // wellknown options
+        );
+
+        this.options.maxConnections = this.options.maxConnections || 5;
+        this.options.maxMessages = this.options.maxMessages || 100;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'smtp-pool'
+        });
+
+        // temporary object
+        let connection = new SMTPConnection(this.options);
+
+        this.name = 'SMTP (pool)';
+        this.version = packageData.version + '[client:' + connection.version + ']';
+
+        this._rateLimit = {
+            counter: 0,
+            timeout: null,
+            waiting: [],
+            checkpoint: false,
+            delta: Number(this.options.rateDelta) || 1000,
+            limit: Number(this.options.rateLimit) || 0
+        };
+        this._closed = false;
+        this._queue = [];
+        this._connections = [];
+        this._connectionCounter = 0;
+
+        this.idling = true;
+
+        setImmediate(() => {
+            if (this.idling) {
+                this.emit('idle');
+            }
+        });
+    }
+
+    /**
+     * Placeholder function for creating proxy sockets. This method immediatelly returns
+     * without a socket
+     *
+     * @param {Object} options Connection options
+     * @param {Function} callback Callback function to run with the socket keys
+     */
+    getSocket(options, callback) {
+        // return immediatelly
+        return setImmediate(() => callback(null, false));
+    }
+
+    /**
+     * Queues an e-mail to be sent using the selected settings
+     *
+     * @param {Object} mail Mail object
+     * @param {Function} callback Callback function
+     */
+    send(mail, callback) {
+        if (this._closed) {
+            return false;
+        }
+
+        this._queue.push({
+            mail,
+            requeueAttempts: 0,
+            callback
+        });
+
+        if (this.idling && this._queue.length >= this.options.maxConnections) {
+            this.idling = false;
+        }
+
+        setImmediate(() => this._processMessages());
+
+        return true;
+    }
+
+    /**
+     * Closes all connections in the pool. If there is a message being sent, the connection
+     * is closed later
+     */
+    close() {
+        let connection;
+        let len = this._connections.length;
+        this._closed = true;
+
+        // clear rate limit timer if it exists
+        clearTimeout(this._rateLimit.timeout);
+
+        if (!len && !this._queue.length) {
+            return;
+        }
+
+        // remove all available connections
+        for (let i = len - 1; i >= 0; i--) {
+            if (this._connections[i] && this._connections[i].available) {
+                connection = this._connections[i];
+                connection.close();
+                this.logger.info(
+                    {
+                        tnx: 'connection',
+                        cid: connection.id,
+                        action: 'removed'
+                    },
+                    'Connection #%s removed',
+                    connection.id
+                );
+            }
+        }
+
+        if (len && !this._connections.length) {
+            this.logger.debug(
+                {
+                    tnx: 'connection'
+                },
+                'All connections removed'
+            );
+        }
+
+        if (!this._queue.length) {
+            return;
+        }
+
+        // make sure that entire queue would be cleaned
+        let invokeCallbacks = () => {
+            if (!this._queue.length) {
+                this.logger.debug(
+                    {
+                        tnx: 'connection'
+                    },
+                    'Pending queue entries cleared'
+                );
+                return;
+            }
+            let entry = this._queue.shift();
+            if (entry && typeof entry.callback === 'function') {
+                try {
+                    entry.callback(new Error('Connection pool was closed'));
+                } catch (E) {
+                    this.logger.error(
+                        {
+                            err: E,
+                            tnx: 'callback',
+                            cid: connection.id
+                        },
+                        'Callback error for #%s: %s',
+                        connection.id,
+                        E.message
+                    );
+                }
+            }
+            setImmediate(invokeCallbacks);
+        };
+        setImmediate(invokeCallbacks);
+    }
+
+    /**
+     * Check the queue and available connections. If there is a message to be sent and there is
+     * an available connection, then use this connection to send the mail
+     */
+    _processMessages() {
+        let connection;
+        let i, len;
+
+        // do nothing if already closed
+        if (this._closed) {
+            return;
+        }
+
+        // do nothing if queue is empty
+        if (!this._queue.length) {
+            if (!this.idling) {
+                // no pending jobs
+                this.idling = true;
+                this.emit('idle');
+            }
+            return;
+        }
+
+        // find first available connection
+        for (i = 0, len = this._connections.length; i < len; i++) {
+            if (this._connections[i].available) {
+                connection = this._connections[i];
+                break;
+            }
+        }
+
+        if (!connection && this._connections.length < this.options.maxConnections) {
+            connection = this._createConnection();
+        }
+
+        if (!connection) {
+            // no more free connection slots available
+            this.idling = false;
+            return;
+        }
+
+        // check if there is free space in the processing queue
+        if (!this.idling && this._queue.length < this.options.maxConnections) {
+            this.idling = true;
+            this.emit('idle');
+        }
+
+        let entry = (connection.queueEntry = this._queue.shift());
+        entry.messageId = (connection.queueEntry.mail.message.getHeader('message-id') || '').replace(/[<>\s]/g, '');
+
+        connection.available = false;
+
+        this.logger.debug(
+            {
+                tnx: 'pool',
+                cid: connection.id,
+                messageId: entry.messageId,
+                action: 'assign'
+            },
+            'Assigned message <%s> to #%s (%s)',
+            entry.messageId,
+            connection.id,
+            connection.messages + 1
+        );
+
+        if (this._rateLimit.limit) {
+            this._rateLimit.counter++;
+            if (!this._rateLimit.checkpoint) {
+                this._rateLimit.checkpoint = Date.now();
+            }
+        }
+
+        connection.send(entry.mail, (err, info) => {
+            // only process callback if current handler is not changed
+            if (entry === connection.queueEntry) {
+                try {
+                    entry.callback(err, info);
+                } catch (E) {
+                    this.logger.error(
+                        {
+                            err: E,
+                            tnx: 'callback',
+                            cid: connection.id
+                        },
+                        'Callback error for #%s: %s',
+                        connection.id,
+                        E.message
+                    );
+                }
+                connection.queueEntry = false;
+            }
+        });
+    }
+
+    /**
+     * Creates a new pool resource
+     */
+    _createConnection() {
+        let connection = new PoolResource(this);
+
+        connection.id = ++this._connectionCounter;
+
+        this.logger.info(
+            {
+                tnx: 'pool',
+                cid: connection.id,
+                action: 'conection'
+            },
+            'Created new pool resource #%s',
+            connection.id
+        );
+
+        // resource comes available
+        connection.on('available', () => {
+            this.logger.debug(
+                {
+                    tnx: 'connection',
+                    cid: connection.id,
+                    action: 'available'
+                },
+                'Connection #%s became available',
+                connection.id
+            );
+
+            if (this._closed) {
+                // if already closed run close() that will remove this connections from connections list
+                this.close();
+            } else {
+                // check if there's anything else to send
+                this._processMessages();
+            }
+        });
+
+        // resource is terminated with an error
+        connection.once('error', err => {
+            if (err.code !== 'EMAXLIMIT') {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'pool',
+                        cid: connection.id
+                    },
+                    'Pool Error for #%s: %s',
+                    connection.id,
+                    err.message
+                );
+            } else {
+                this.logger.debug(
+                    {
+                        tnx: 'pool',
+                        cid: connection.id,
+                        action: 'maxlimit'
+                    },
+                    'Max messages limit exchausted for #%s',
+                    connection.id
+                );
+            }
+
+            if (connection.queueEntry) {
+                try {
+                    connection.queueEntry.callback(err);
+                } catch (E) {
+                    this.logger.error(
+                        {
+                            err: E,
+                            tnx: 'callback',
+                            cid: connection.id
+                        },
+                        'Callback error for #%s: %s',
+                        connection.id,
+                        E.message
+                    );
+                }
+                connection.queueEntry = false;
+            }
+
+            // remove the erroneus connection from connections list
+            this._removeConnection(connection);
+
+            this._continueProcessing();
+        });
+
+        connection.once('close', () => {
+            this.logger.info(
+                {
+                    tnx: 'connection',
+                    cid: connection.id,
+                    action: 'closed'
+                },
+                'Connection #%s was closed',
+                connection.id
+            );
+
+            this._removeConnection(connection);
+
+            if (connection.queueEntry) {
+                // If the connection closed when sending, add the message to the queue again
+                // if max number of requeues is not reached yet
+                // Note that we must wait a bit.. because the callback of the 'error' handler might be called
+                // in the next event loop
+                setTimeout(() => {
+                    if (connection.queueEntry) {
+                        if (this._shouldRequeuOnConnectionClose(connection.queueEntry)) {
+                            this._requeueEntryOnConnectionClose(connection);
+                        } else {
+                            this._failDeliveryOnConnectionClose(connection);
+                        }
+                    }
+                    this._continueProcessing();
+                }, 50);
+            } else {
+                this._continueProcessing();
+            }
+        });
+
+        this._connections.push(connection);
+
+        return connection;
+    }
+
+    _shouldRequeuOnConnectionClose(queueEntry) {
+        if (this.options.maxRequeues === undefined || this.options.maxRequeues < 0) {
+            return true;
+        }
+
+        return queueEntry.requeueAttempts < this.options.maxRequeues;
+    }
+
+    _failDeliveryOnConnectionClose(connection) {
+        if (connection.queueEntry && connection.queueEntry.callback) {
+            try {
+                connection.queueEntry.callback(new Error('Reached maximum number of retries after connection was closed'));
+            } catch (E) {
+                this.logger.error(
+                    {
+                        err: E,
+                        tnx: 'callback',
+                        messageId: connection.queueEntry.messageId,
+                        cid: connection.id
+                    },
+                    'Callback error for #%s: %s',
+                    connection.id,
+                    E.message
+                );
+            }
+            connection.queueEntry = false;
+        }
+    }
+
+    _requeueEntryOnConnectionClose(connection) {
+        connection.queueEntry.requeueAttempts = connection.queueEntry.requeueAttempts + 1;
+        this.logger.debug(
+            {
+                tnx: 'pool',
+                cid: connection.id,
+                messageId: connection.queueEntry.messageId,
+                action: 'requeue'
+            },
+            'Re-queued message <%s> for #%s. Attempt: #%s',
+            connection.queueEntry.messageId,
+            connection.id,
+            connection.queueEntry.requeueAttempts
+        );
+        this._queue.unshift(connection.queueEntry);
+        connection.queueEntry = false;
+    }
+
+    /**
+     * Continue to process message if the pool hasn't closed
+     */
+    _continueProcessing() {
+        if (this._closed) {
+            this.close();
+        } else {
+            setTimeout(() => this._processMessages(), 100);
+        }
+    }
+
+    /**
+     * Remove resource from pool
+     *
+     * @param {Object} connection The PoolResource to remove
+     */
+    _removeConnection(connection) {
+        let index = this._connections.indexOf(connection);
+
+        if (index !== -1) {
+            this._connections.splice(index, 1);
+        }
+    }
+
+    /**
+     * Checks if connections have hit current rate limit and if so, queues the availability callback
+     *
+     * @param {Function} callback Callback function to run once rate limiter has been cleared
+     */
+    _checkRateLimit(callback) {
+        if (!this._rateLimit.limit) {
+            return callback();
+        }
+
+        let now = Date.now();
+
+        if (this._rateLimit.counter < this._rateLimit.limit) {
+            return callback();
+        }
+
+        this._rateLimit.waiting.push(callback);
+
+        if (this._rateLimit.checkpoint <= now - this._rateLimit.delta) {
+            return this._clearRateLimit();
+        } else if (!this._rateLimit.timeout) {
+            this._rateLimit.timeout = setTimeout(() => this._clearRateLimit(), this._rateLimit.delta - (now - this._rateLimit.checkpoint));
+            this._rateLimit.checkpoint = now;
+        }
+    }
+
+    /**
+     * Clears current rate limit limitation and runs paused callback
+     */
+    _clearRateLimit() {
+        clearTimeout(this._rateLimit.timeout);
+        this._rateLimit.timeout = null;
+        this._rateLimit.counter = 0;
+        this._rateLimit.checkpoint = false;
+
+        // resume all paused connections
+        while (this._rateLimit.waiting.length) {
+            let cb = this._rateLimit.waiting.shift();
+            setImmediate(cb);
+        }
+    }
+
+    /**
+     * Returns true if there are free slots in the queue
+     */
+    isIdle() {
+        return this.idling;
+    }
+
+    /**
+     * Verifies SMTP configuration
+     *
+     * @param {Function} callback Callback function
+     */
+    verify(callback) {
+        let promise;
+
+        if (!callback) {
+            promise = new Promise((resolve, reject) => {
+                callback = shared.callbackPromise(resolve, reject);
+            });
+        }
+
+        let auth = new PoolResource(this).auth;
+
+        this.getSocket(this.options, (err, socketOptions) => {
+            if (err) {
+                return callback(err);
+            }
+
+            let options = this.options;
+            if (socketOptions && socketOptions.connection) {
+                this.logger.info(
+                    {
+                        tnx: 'proxy',
+                        remoteAddress: socketOptions.connection.remoteAddress,
+                        remotePort: socketOptions.connection.remotePort,
+                        destHost: options.host || '',
+                        destPort: options.port || '',
+                        action: 'connected'
+                    },
+                    'Using proxied socket from %s:%s to %s:%s',
+                    socketOptions.connection.remoteAddress,
+                    socketOptions.connection.remotePort,
+                    options.host || '',
+                    options.port || ''
+                );
+                options = shared.assign(false, options);
+                Object.keys(socketOptions).forEach(key => {
+                    options[key] = socketOptions[key];
+                });
+            }
+
+            let connection = new SMTPConnection(options);
+            let returned = false;
+
+            connection.once('error', err => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                connection.close();
+                return callback(err);
+            });
+
+            connection.once('end', () => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                return callback(new Error('Connection closed'));
+            });
+
+            let finalize = () => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                connection.quit();
+                return callback(null, true);
+            };
+
+            connection.connect(() => {
+                if (returned) {
+                    return;
+                }
+
+                if (auth && (connection.allowsAuth || options.forceAuth)) {
+                    connection.login(auth, err => {
+                        if (returned) {
+                            return;
+                        }
+
+                        if (err) {
+                            returned = true;
+                            connection.close();
+                            return callback(err);
+                        }
+
+                        finalize();
+                    });
+                } else {
+                    finalize();
+                }
+            });
+        });
+
+        return promise;
+    }
+}
+
+// expose to the world
+module.exports = SMTPPool;
diff --git a/server/node_modules/nodemailer/lib/smtp-pool/pool-resource.js b/server/node_modules/nodemailer/lib/smtp-pool/pool-resource.js
new file mode 100644
index 0000000..d67cc5c
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-pool/pool-resource.js
@@ -0,0 +1,253 @@
+'use strict';
+
+const SMTPConnection = require('../smtp-connection');
+const assign = require('../shared').assign;
+const XOAuth2 = require('../xoauth2');
+const EventEmitter = require('events');
+
+/**
+ * Creates an element for the pool
+ *
+ * @constructor
+ * @param {Object} options SMTPPool instance
+ */
+class PoolResource extends EventEmitter {
+    constructor(pool) {
+        super();
+
+        this.pool = pool;
+        this.options = pool.options;
+        this.logger = this.pool.logger;
+
+        if (this.options.auth) {
+            switch ((this.options.auth.type || '').toString().toUpperCase()) {
+                case 'OAUTH2': {
+                    let oauth2 = new XOAuth2(this.options.auth, this.logger);
+                    oauth2.provisionCallback = (this.pool.mailer && this.pool.mailer.get('oauth2_provision_cb')) || oauth2.provisionCallback;
+                    this.auth = {
+                        type: 'OAUTH2',
+                        user: this.options.auth.user,
+                        oauth2,
+                        method: 'XOAUTH2'
+                    };
+                    oauth2.on('token', token => this.pool.mailer.emit('token', token));
+                    oauth2.on('error', err => this.emit('error', err));
+                    break;
+                }
+                default:
+                    if (!this.options.auth.user && !this.options.auth.pass) {
+                        break;
+                    }
+                    this.auth = {
+                        type: (this.options.auth.type || '').toString().toUpperCase() || 'LOGIN',
+                        user: this.options.auth.user,
+                        credentials: {
+                            user: this.options.auth.user || '',
+                            pass: this.options.auth.pass,
+                            options: this.options.auth.options
+                        },
+                        method: (this.options.auth.method || '').trim().toUpperCase() || this.options.authMethod || false
+                    };
+            }
+        }
+
+        this._connection = false;
+        this._connected = false;
+
+        this.messages = 0;
+        this.available = true;
+    }
+
+    /**
+     * Initiates a connection to the SMTP server
+     *
+     * @param {Function} callback Callback function to run once the connection is established or failed
+     */
+    connect(callback) {
+        this.pool.getSocket(this.options, (err, socketOptions) => {
+            if (err) {
+                return callback(err);
+            }
+
+            let returned = false;
+            let options = this.options;
+            if (socketOptions && socketOptions.connection) {
+                this.logger.info(
+                    {
+                        tnx: 'proxy',
+                        remoteAddress: socketOptions.connection.remoteAddress,
+                        remotePort: socketOptions.connection.remotePort,
+                        destHost: options.host || '',
+                        destPort: options.port || '',
+                        action: 'connected'
+                    },
+                    'Using proxied socket from %s:%s to %s:%s',
+                    socketOptions.connection.remoteAddress,
+                    socketOptions.connection.remotePort,
+                    options.host || '',
+                    options.port || ''
+                );
+
+                options = assign(false, options);
+                Object.keys(socketOptions).forEach(key => {
+                    options[key] = socketOptions[key];
+                });
+            }
+
+            this.connection = new SMTPConnection(options);
+
+            this.connection.once('error', err => {
+                this.emit('error', err);
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                return callback(err);
+            });
+
+            this.connection.once('end', () => {
+                this.close();
+                if (returned) {
+                    return;
+                }
+                returned = true;
+
+                let timer = setTimeout(() => {
+                    if (returned) {
+                        return;
+                    }
+                    // still have not returned, this means we have an unexpected connection close
+                    let err = new Error('Unexpected socket close');
+                    if (this.connection && this.connection._socket && this.connection._socket.upgrading) {
+                        // starttls connection errors
+                        err.code = 'ETLS';
+                    }
+                    callback(err);
+                }, 1000);
+
+                try {
+                    timer.unref();
+                } catch (E) {
+                    // Ignore. Happens on envs with non-node timer implementation
+                }
+            });
+
+            this.connection.connect(() => {
+                if (returned) {
+                    return;
+                }
+
+                if (this.auth && (this.connection.allowsAuth || options.forceAuth)) {
+                    this.connection.login(this.auth, err => {
+                        if (returned) {
+                            return;
+                        }
+                        returned = true;
+
+                        if (err) {
+                            this.connection.close();
+                            this.emit('error', err);
+                            return callback(err);
+                        }
+
+                        this._connected = true;
+                        callback(null, true);
+                    });
+                } else {
+                    returned = true;
+                    this._connected = true;
+                    return callback(null, true);
+                }
+            });
+        });
+    }
+
+    /**
+     * Sends an e-mail to be sent using the selected settings
+     *
+     * @param {Object} mail Mail object
+     * @param {Function} callback Callback function
+     */
+    send(mail, callback) {
+        if (!this._connected) {
+            return this.connect(err => {
+                if (err) {
+                    return callback(err);
+                }
+                return this.send(mail, callback);
+            });
+        }
+
+        let envelope = mail.message.getEnvelope();
+        let messageId = mail.message.messageId();
+
+        let recipients = [].concat(envelope.to || []);
+        if (recipients.length > 3) {
+            recipients.push('...and ' + recipients.splice(2).length + ' more');
+        }
+        this.logger.info(
+            {
+                tnx: 'send',
+                messageId,
+                cid: this.id
+            },
+            'Sending message %s using #%s to <%s>',
+            messageId,
+            this.id,
+            recipients.join(', ')
+        );
+
+        if (mail.data.dsn) {
+            envelope.dsn = mail.data.dsn;
+        }
+
+        this.connection.send(envelope, mail.message.createReadStream(), (err, info) => {
+            this.messages++;
+
+            if (err) {
+                this.connection.close();
+                this.emit('error', err);
+                return callback(err);
+            }
+
+            info.envelope = {
+                from: envelope.from,
+                to: envelope.to
+            };
+            info.messageId = messageId;
+
+            setImmediate(() => {
+                let err;
+                if (this.messages >= this.options.maxMessages) {
+                    err = new Error('Resource exhausted');
+                    err.code = 'EMAXLIMIT';
+                    this.connection.close();
+                    this.emit('error', err);
+                } else {
+                    this.pool._checkRateLimit(() => {
+                        this.available = true;
+                        this.emit('available');
+                    });
+                }
+            });
+
+            callback(null, info);
+        });
+    }
+
+    /**
+     * Closes the connection
+     */
+    close() {
+        this._connected = false;
+        if (this.auth && this.auth.oauth2) {
+            this.auth.oauth2.removeAllListeners();
+        }
+        if (this.connection) {
+            this.connection.close();
+        }
+        this.emit('close');
+    }
+}
+
+module.exports = PoolResource;
diff --git a/server/node_modules/nodemailer/lib/smtp-transport/index.js b/server/node_modules/nodemailer/lib/smtp-transport/index.js
new file mode 100644
index 0000000..99ae4eb
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/smtp-transport/index.js
@@ -0,0 +1,408 @@
+'use strict';
+
+const EventEmitter = require('events');
+const SMTPConnection = require('../smtp-connection');
+const wellKnown = require('../well-known');
+const shared = require('../shared');
+const XOAuth2 = require('../xoauth2');
+const packageData = require('../../package.json');
+
+/**
+ * Creates a SMTP transport object for Nodemailer
+ *
+ * @constructor
+ * @param {Object} options Connection options
+ */
+class SMTPTransport extends EventEmitter {
+    constructor(options) {
+        super();
+
+        options = options || {};
+        if (typeof options === 'string') {
+            options = {
+                url: options
+            };
+        }
+
+        let urlData;
+        let service = options.service;
+
+        if (typeof options.getSocket === 'function') {
+            this.getSocket = options.getSocket;
+        }
+
+        if (options.url) {
+            urlData = shared.parseConnectionUrl(options.url);
+            service = service || urlData.service;
+        }
+
+        this.options = shared.assign(
+            false, // create new object
+            options, // regular options
+            urlData, // url options
+            service && wellKnown(service) // wellknown options
+        );
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'smtp-transport'
+        });
+
+        // temporary object
+        let connection = new SMTPConnection(this.options);
+
+        this.name = 'SMTP';
+        this.version = packageData.version + '[client:' + connection.version + ']';
+
+        if (this.options.auth) {
+            this.auth = this.getAuth({});
+        }
+    }
+
+    /**
+     * Placeholder function for creating proxy sockets. This method immediatelly returns
+     * without a socket
+     *
+     * @param {Object} options Connection options
+     * @param {Function} callback Callback function to run with the socket keys
+     */
+    getSocket(options, callback) {
+        // return immediatelly
+        return setImmediate(() => callback(null, false));
+    }
+
+    getAuth(authOpts) {
+        if (!authOpts) {
+            return this.auth;
+        }
+
+        let hasAuth = false;
+        let authData = {};
+
+        if (this.options.auth && typeof this.options.auth === 'object') {
+            Object.keys(this.options.auth).forEach(key => {
+                hasAuth = true;
+                authData[key] = this.options.auth[key];
+            });
+        }
+
+        if (authOpts && typeof authOpts === 'object') {
+            Object.keys(authOpts).forEach(key => {
+                hasAuth = true;
+                authData[key] = authOpts[key];
+            });
+        }
+
+        if (!hasAuth) {
+            return false;
+        }
+
+        switch ((authData.type || '').toString().toUpperCase()) {
+            case 'OAUTH2': {
+                if (!authData.service && !authData.user) {
+                    return false;
+                }
+                let oauth2 = new XOAuth2(authData, this.logger);
+                oauth2.provisionCallback = (this.mailer && this.mailer.get('oauth2_provision_cb')) || oauth2.provisionCallback;
+                oauth2.on('token', token => this.mailer.emit('token', token));
+                oauth2.on('error', err => this.emit('error', err));
+                return {
+                    type: 'OAUTH2',
+                    user: authData.user,
+                    oauth2,
+                    method: 'XOAUTH2'
+                };
+            }
+            default:
+                return {
+                    type: (authData.type || '').toString().toUpperCase() || 'LOGIN',
+                    user: authData.user,
+                    credentials: {
+                        user: authData.user || '',
+                        pass: authData.pass,
+                        options: authData.options
+                    },
+                    method: (authData.method || '').trim().toUpperCase() || this.options.authMethod || false
+                };
+        }
+    }
+
+    /**
+     * Sends an e-mail using the selected settings
+     *
+     * @param {Object} mail Mail object
+     * @param {Function} callback Callback function
+     */
+    send(mail, callback) {
+        this.getSocket(this.options, (err, socketOptions) => {
+            if (err) {
+                return callback(err);
+            }
+
+            let returned = false;
+            let options = this.options;
+            if (socketOptions && socketOptions.connection) {
+                this.logger.info(
+                    {
+                        tnx: 'proxy',
+                        remoteAddress: socketOptions.connection.remoteAddress,
+                        remotePort: socketOptions.connection.remotePort,
+                        destHost: options.host || '',
+                        destPort: options.port || '',
+                        action: 'connected'
+                    },
+                    'Using proxied socket from %s:%s to %s:%s',
+                    socketOptions.connection.remoteAddress,
+                    socketOptions.connection.remotePort,
+                    options.host || '',
+                    options.port || ''
+                );
+
+                // only copy options if we need to modify it
+                options = shared.assign(false, options);
+                Object.keys(socketOptions).forEach(key => {
+                    options[key] = socketOptions[key];
+                });
+            }
+
+            let connection = new SMTPConnection(options);
+
+            connection.once('error', err => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                connection.close();
+                return callback(err);
+            });
+
+            connection.once('end', () => {
+                if (returned) {
+                    return;
+                }
+
+                let timer = setTimeout(() => {
+                    if (returned) {
+                        return;
+                    }
+                    returned = true;
+                    // still have not returned, this means we have an unexpected connection close
+                    let err = new Error('Unexpected socket close');
+                    if (connection && connection._socket && connection._socket.upgrading) {
+                        // starttls connection errors
+                        err.code = 'ETLS';
+                    }
+                    callback(err);
+                }, 1000);
+
+                try {
+                    timer.unref();
+                } catch (E) {
+                    // Ignore. Happens on envs with non-node timer implementation
+                }
+            });
+
+            let sendMessage = () => {
+                let envelope = mail.message.getEnvelope();
+                let messageId = mail.message.messageId();
+
+                let recipients = [].concat(envelope.to || []);
+                if (recipients.length > 3) {
+                    recipients.push('...and ' + recipients.splice(2).length + ' more');
+                }
+
+                if (mail.data.dsn) {
+                    envelope.dsn = mail.data.dsn;
+                }
+
+                this.logger.info(
+                    {
+                        tnx: 'send',
+                        messageId
+                    },
+                    'Sending message %s to <%s>',
+                    messageId,
+                    recipients.join(', ')
+                );
+
+                connection.send(envelope, mail.message.createReadStream(), (err, info) => {
+                    returned = true;
+                    connection.close();
+                    if (err) {
+                        this.logger.error(
+                            {
+                                err,
+                                tnx: 'send'
+                            },
+                            'Send error for %s: %s',
+                            messageId,
+                            err.message
+                        );
+                        return callback(err);
+                    }
+                    info.envelope = {
+                        from: envelope.from,
+                        to: envelope.to
+                    };
+                    info.messageId = messageId;
+                    try {
+                        return callback(null, info);
+                    } catch (E) {
+                        this.logger.error(
+                            {
+                                err: E,
+                                tnx: 'callback'
+                            },
+                            'Callback error for %s: %s',
+                            messageId,
+                            E.message
+                        );
+                    }
+                });
+            };
+
+            connection.connect(() => {
+                if (returned) {
+                    return;
+                }
+
+                let auth = this.getAuth(mail.data.auth);
+
+                if (auth && (connection.allowsAuth || options.forceAuth)) {
+                    connection.login(auth, err => {
+                        if (auth && auth !== this.auth && auth.oauth2) {
+                            auth.oauth2.removeAllListeners();
+                        }
+                        if (returned) {
+                            return;
+                        }
+
+                        if (err) {
+                            returned = true;
+                            connection.close();
+                            return callback(err);
+                        }
+
+                        sendMessage();
+                    });
+                } else {
+                    sendMessage();
+                }
+            });
+        });
+    }
+
+    /**
+     * Verifies SMTP configuration
+     *
+     * @param {Function} callback Callback function
+     */
+    verify(callback) {
+        let promise;
+
+        if (!callback) {
+            promise = new Promise((resolve, reject) => {
+                callback = shared.callbackPromise(resolve, reject);
+            });
+        }
+
+        this.getSocket(this.options, (err, socketOptions) => {
+            if (err) {
+                return callback(err);
+            }
+
+            let options = this.options;
+            if (socketOptions && socketOptions.connection) {
+                this.logger.info(
+                    {
+                        tnx: 'proxy',
+                        remoteAddress: socketOptions.connection.remoteAddress,
+                        remotePort: socketOptions.connection.remotePort,
+                        destHost: options.host || '',
+                        destPort: options.port || '',
+                        action: 'connected'
+                    },
+                    'Using proxied socket from %s:%s to %s:%s',
+                    socketOptions.connection.remoteAddress,
+                    socketOptions.connection.remotePort,
+                    options.host || '',
+                    options.port || ''
+                );
+
+                options = shared.assign(false, options);
+                Object.keys(socketOptions).forEach(key => {
+                    options[key] = socketOptions[key];
+                });
+            }
+
+            let connection = new SMTPConnection(options);
+            let returned = false;
+
+            connection.once('error', err => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                connection.close();
+                return callback(err);
+            });
+
+            connection.once('end', () => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                return callback(new Error('Connection closed'));
+            });
+
+            let finalize = () => {
+                if (returned) {
+                    return;
+                }
+                returned = true;
+                connection.quit();
+                return callback(null, true);
+            };
+
+            connection.connect(() => {
+                if (returned) {
+                    return;
+                }
+
+                let authData = this.getAuth({});
+
+                if (authData && (connection.allowsAuth || options.forceAuth)) {
+                    connection.login(authData, err => {
+                        if (returned) {
+                            return;
+                        }
+
+                        if (err) {
+                            returned = true;
+                            connection.close();
+                            return callback(err);
+                        }
+
+                        finalize();
+                    });
+                } else {
+                    finalize();
+                }
+            });
+        });
+
+        return promise;
+    }
+
+    /**
+     * Releases resources
+     */
+    close() {
+        if (this.auth && this.auth.oauth2) {
+            this.auth.oauth2.removeAllListeners();
+        }
+        this.emit('close');
+    }
+}
+
+// expose to the world
+module.exports = SMTPTransport;
diff --git a/server/node_modules/nodemailer/lib/stream-transport/index.js b/server/node_modules/nodemailer/lib/stream-transport/index.js
new file mode 100644
index 0000000..a39fac4
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/stream-transport/index.js
@@ -0,0 +1,142 @@
+'use strict';
+
+const packageData = require('../../package.json');
+const shared = require('../shared');
+const LeWindows = require('../sendmail-transport/le-windows');
+const LeUnix = require('../sendmail-transport/le-unix');
+
+/**
+ * Generates a Transport object for streaming
+ *
+ * Possible options can be the following:
+ *
+ *  * **buffer** if true, then returns the message as a Buffer object instead of a stream
+ *  * **newline** either 'windows' or 'unix'
+ *
+ * @constructor
+ * @param {Object} optional config parameter
+ */
+class StreamTransport {
+    constructor(options) {
+        options = options || {};
+
+        this.options = options || {};
+
+        this.name = 'StreamTransport';
+        this.version = packageData.version;
+
+        this.logger = shared.getLogger(this.options, {
+            component: this.options.component || 'stream-transport'
+        });
+
+        this.winbreak = ['win', 'windows', 'dos', '\r\n'].includes((options.newline || '').toString().toLowerCase());
+    }
+
+    /**
+     * Compiles a mailcomposer message and forwards it to handler that sends it
+     *
+     * @param {Object} emailMessage MailComposer object
+     * @param {Function} callback Callback function to run when the sending is completed
+     */
+    send(mail, done) {
+        // We probably need this in the output
+        mail.message.keepBcc = true;
+
+        let envelope = mail.data.envelope || mail.message.getEnvelope();
+        let messageId = mail.message.messageId();
+
+        let recipients = [].concat(envelope.to || []);
+        if (recipients.length > 3) {
+            recipients.push('...and ' + recipients.splice(2).length + ' more');
+        }
+        this.logger.info(
+            {
+                tnx: 'send',
+                messageId
+            },
+            'Sending message %s to <%s> using %s line breaks',
+            messageId,
+            recipients.join(', '),
+            this.winbreak ? '<CR><LF>' : '<LF>'
+        );
+
+        setImmediate(() => {
+            let sourceStream;
+            let stream;
+            let transform;
+
+            try {
+                transform = this.winbreak ? new LeWindows() : new LeUnix();
+                sourceStream = mail.message.createReadStream();
+                stream = sourceStream.pipe(transform);
+                sourceStream.on('error', err => stream.emit('error', err));
+            } catch (E) {
+                this.logger.error(
+                    {
+                        err: E,
+                        tnx: 'send',
+                        messageId
+                    },
+                    'Creating send stream failed for %s. %s',
+                    messageId,
+                    E.message
+                );
+                return done(E);
+            }
+
+            if (!this.options.buffer) {
+                stream.once('error', err => {
+                    this.logger.error(
+                        {
+                            err,
+                            tnx: 'send',
+                            messageId
+                        },
+                        'Failed creating message for %s. %s',
+                        messageId,
+                        err.message
+                    );
+                });
+                return done(null, {
+                    envelope: mail.data.envelope || mail.message.getEnvelope(),
+                    messageId,
+                    message: stream
+                });
+            }
+
+            let chunks = [];
+            let chunklen = 0;
+            stream.on('readable', () => {
+                let chunk;
+                while ((chunk = stream.read()) !== null) {
+                    chunks.push(chunk);
+                    chunklen += chunk.length;
+                }
+            });
+
+            stream.once('error', err => {
+                this.logger.error(
+                    {
+                        err,
+                        tnx: 'send',
+                        messageId
+                    },
+                    'Failed creating message for %s. %s',
+                    messageId,
+                    err.message
+                );
+                return done(err);
+            });
+
+            stream.on('end', () =>
+                done(null, {
+                    envelope: mail.data.envelope || mail.message.getEnvelope(),
+                    messageId,
+                    message: Buffer.concat(chunks, chunklen)
+                })
+            );
+        });
+    }
+}
+
+module.exports = StreamTransport;
diff --git a/server/node_modules/nodemailer/lib/well-known/index.js b/server/node_modules/nodemailer/lib/well-known/index.js
new file mode 100644
index 0000000..ca4c537
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/well-known/index.js
@@ -0,0 +1,47 @@
+'use strict';
+
+const services = require('./services.json');
+const normalized = {};
+
+Object.keys(services).forEach(key => {
+    let service = services[key];
+
+    normalized[normalizeKey(key)] = normalizeService(service);
+
+    [].concat(service.aliases || []).forEach(alias => {
+        normalized[normalizeKey(alias)] = normalizeService(service);
+    });
+
+    [].concat(service.domains || []).forEach(domain => {
+        normalized[normalizeKey(domain)] = normalizeService(service);
+    });
+});
+
+function normalizeKey(key) {
+    return key.replace(/[^a-zA-Z0-9.-]/g, '').toLowerCase();
+}
+
+function normalizeService(service) {
+    let filter = ['domains', 'aliases'];
+    let response = {};
+
+    Object.keys(service).forEach(key => {
+        if (filter.indexOf(key) < 0) {
+            response[key] = service[key];
+        }
+    });
+
+    return response;
+}
+
+/**
+ * Resolves SMTP config for given key. Key can be a name (like 'Gmail'), alias (like 'Google Mail') or
+ * an email address (like 'test@googlemail.com').
+ *
+ * @param {String} key [description]
+ * @returns {Object} SMTP config or false if not found
+ */
+module.exports = function(key) {
+    key = normalizeKey(key.split('@').pop());
+    return normalized[key] || false;
+};
diff --git a/server/node_modules/nodemailer/lib/well-known/services.json b/server/node_modules/nodemailer/lib/well-known/services.json
new file mode 100644
index 0000000..187ce40
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/well-known/services.json
@@ -0,0 +1,262 @@
+{
+    "1und1": {
+        "host": "smtp.1und1.de",
+        "port": 465,
+        "secure": true,
+        "authMethod": "LOGIN"
+    },
+
+    "AOL": {
+        "domains": ["aol.com"],
+        "host": "smtp.aol.com",
+        "port": 587
+    },
+
+    "DebugMail": {
+        "host": "debugmail.io",
+        "port": 25
+    },
+
+    "DynectEmail": {
+        "aliases": ["Dynect"],
+        "host": "smtp.dynect.net",
+        "port": 25
+    },
+
+    "FastMail": {
+        "domains": ["fastmail.fm"],
+        "host": "smtp.fastmail.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "GandiMail": {
+        "aliases": ["Gandi", "Gandi Mail"],
+        "host": "mail.gandi.net",
+        "port": 587
+    },
+
+    "Gmail": {
+        "aliases": ["Google Mail"],
+        "domains": ["gmail.com", "googlemail.com"],
+        "host": "smtp.gmail.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "Godaddy": {
+        "host": "smtpout.secureserver.net",
+        "port": 25
+    },
+
+    "GodaddyAsia": {
+        "host": "smtp.asia.secureserver.net",
+        "port": 25
+    },
+
+    "GodaddyEurope": {
+        "host": "smtp.europe.secureserver.net",
+        "port": 25
+    },
+
+    "hot.ee": {
+        "host": "mail.hot.ee"
+    },
+
+    "Hotmail": {
+        "aliases": ["Outlook", "Outlook.com", "Hotmail.com"],
+        "domains": ["hotmail.com", "outlook.com"],
+        "host": "smtp.live.com",
+        "port": 587
+    },
+
+    "iCloud": {
+        "aliases": ["Me", "Mac"],
+        "domains": ["me.com", "mac.com"],
+        "host": "smtp.mail.me.com",
+        "port": 587
+    },
+
+    "mail.ee": {
+        "host": "smtp.mail.ee"
+    },
+
+    "Mail.ru": {
+        "host": "smtp.mail.ru",
+        "port": 465,
+        "secure": true
+    },
+
+    "Maildev": {
+        "port": 1025,
+        "ignoreTLS": true
+    },
+
+    "Mailgun": {
+        "host": "smtp.mailgun.org",
+        "port": 465,
+        "secure": true
+    },
+
+    "Mailjet": {
+        "host": "in.mailjet.com",
+        "port": 587
+    },
+
+    "Mailosaur": {
+        "host": "mailosaur.io",
+        "port": 25
+    },
+
+    "Mailtrap": {
+        "host": "smtp.mailtrap.io",
+        "port": 2525
+    },
+
+    "Mandrill": {
+        "host": "smtp.mandrillapp.com",
+        "port": 587
+    },
+
+    "Naver": {
+        "host": "smtp.naver.com",
+        "port": 587
+    },
+
+    "One": {
+        "host": "send.one.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "OpenMailBox": {
+        "aliases": ["OMB", "openmailbox.org"],
+        "host": "smtp.openmailbox.org",
+        "port": 465,
+        "secure": true
+    },
+
+    "Outlook365": {
+        "host": "smtp.office365.com",
+        "port": 587,
+        "secure": false
+    },
+
+    "Postmark": {
+        "aliases": ["PostmarkApp"],
+        "host": "smtp.postmarkapp.com",
+        "port": 2525
+    },
+
+    "qiye.aliyun": {
+        "host": "smtp.mxhichina.com",
+        "port": "465",
+        "secure": true
+    },
+
+    "QQ": {
+        "domains": ["qq.com"],
+        "host": "smtp.qq.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "QQex": {
+        "aliases": ["QQ Enterprise"],
+        "domains": ["exmail.qq.com"],
+        "host": "smtp.exmail.qq.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "SendCloud": {
+        "host": "smtpcloud.sohu.com",
+        "port": 25
+    },
+
+    "SendGrid": {
+        "host": "smtp.sendgrid.net",
+        "port": 587
+    },
+
+    "SendinBlue": {
+        "host": "smtp-relay.sendinblue.com",
+        "port": 587
+    },
+
+    "SendPulse": {
+        "host": "smtp-pulse.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "SES": {
+        "host": "email-smtp.us-east-1.amazonaws.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "SES-US-EAST-1": {
+        "host": "email-smtp.us-east-1.amazonaws.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "SES-US-WEST-2": {
+        "host": "email-smtp.us-west-2.amazonaws.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "SES-EU-WEST-1": {
+        "host": "email-smtp.eu-west-1.amazonaws.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "Sparkpost": {
+        "aliases": ["SparkPost", "SparkPost Mail"],
+        "domains": ["sparkpost.com"],
+        "host": "smtp.sparkpostmail.com",
+        "port": 587,
+        "secure": false
+    },
+
+    "Tipimail": {
+        "host": "smtp.tipimail.com",
+        "port": 587
+    },
+
+    "Yahoo": {
+        "domains": ["yahoo.com"],
+        "host": "smtp.mail.yahoo.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "Yandex": {
+        "domains": ["yandex.ru"],
+        "host": "smtp.yandex.ru",
+        "port": 465,
+        "secure": true
+    },
+
+    "Zoho": {
+        "host": "smtp.zoho.com",
+        "port": 465,
+        "secure": true,
+        "authMethod": "LOGIN"
+    },
+
+    "126": {
+        "host": "smtp.126.com",
+        "port": 465,
+        "secure": true
+    },
+
+    "163": {
+        "host": "smtp.163.com",
+        "port": 465,
+        "secure": true
+    }
+}
diff --git a/server/node_modules/nodemailer/lib/xoauth2/index.js b/server/node_modules/nodemailer/lib/xoauth2/index.js
new file mode 100644
index 0000000..5039be9
--- /dev/null
+++ b/server/node_modules/nodemailer/lib/xoauth2/index.js
@@ -0,0 +1,368 @@
+'use strict';
+
+const Stream = require('stream').Stream;
+const fetch = require('../fetch');
+const crypto = require('crypto');
+const shared = require('../shared');
+
+/**
+ * XOAUTH2 access_token generator for Gmail.
+ * Create client ID for web applications in Google API console to use it.
+ * See Offline Access for receiving the needed refreshToken for an user
+ * https://developers.google.com/accounts/docs/OAuth2WebServer#offline
+ *
+ * Usage for generating access tokens with a custom method using provisionCallback:
+ * provisionCallback(user, renew, callback)
+ *   * user is the username to get the token for
+ *   * renew is a boolean that if true indicates that existing token failed and needs to be renewed
+ *   * callback is the callback to run with (error, accessToken [, expires])
+ *     * accessToken is a string
+ *     * expires is an optional expire time in milliseconds
+ * If provisionCallback is used, then Nodemailer does not try to attempt generating the token by itself
+ *
+ * @constructor
+ * @param {Object} options Client information for token generation
+ * @param {String} options.user User e-mail address
+ * @param {String} options.clientId Client ID value
+ * @param {String} options.clientSecret Client secret value
+ * @param {String} options.refreshToken Refresh token for an user
+ * @param {String} options.accessUrl Endpoint for token generation, defaults to 'https://accounts.google.com/o/oauth2/token'
+ * @param {String} options.accessToken An existing valid accessToken
+ * @param {String} options.privateKey Private key for JSW
+ * @param {Number} options.expires Optional Access Token expire time in ms
+ * @param {Number} options.timeout Optional TTL for Access Token in seconds
+ * @param {Function} options.provisionCallback Function to run when a new access token is required
+ */
+class XOAuth2 extends Stream {
+    constructor(options, logger) {
+        super();
+
+        this.options = options || {};
+
+        if (options && options.serviceClient) {
+            if (!options.privateKey || !options.user) {
+                setImmediate(() => this.emit('error', new Error('Options "privateKey" and "user" are required for service account!')));
+                return;
+            }
+
+            let serviceRequestTimeout = Math.min(Math.max(Number(this.options.serviceRequestTimeout) || 0, 0), 3600);
+            this.options.serviceRequestTimeout = serviceRequestTimeout || 5 * 60;
+        }
+
+        this.logger = shared.getLogger(
+            {
+                logger
+            },
+            {
+                component: this.options.component || 'OAuth2'
+            }
+        );
+
+        this.provisionCallback = typeof this.options.provisionCallback === 'function' ? this.options.provisionCallback : false;
+
+        this.options.accessUrl = this.options.accessUrl || 'https://accounts.google.com/o/oauth2/token';
+        this.options.customHeaders = this.options.customHeaders || {};
+        this.options.customParams = this.options.customParams || {};
+
+        this.accessToken = this.options.accessToken || false;
+
+        if (this.options.expires && Number(this.options.expires)) {
+            this.expires = this.options.expires;
+        } else {
+            let timeout = Math.max(Number(this.options.timeout) || 0, 0);
+            this.expires = (timeout && Date.now() + timeout * 1000) || 0;
+        }
+    }
+
+    /**
+     * Returns or generates (if previous has expired) a XOAuth2 token
+     *
+     * @param {Boolean} renew If false then use cached access token (if available)
+     * @param {Function} callback Callback function with error object and token string
+     */
+    getToken(renew, callback) {
+        if (!renew && this.accessToken && (!this.expires || this.expires > Date.now())) {
+            return callback(null, this.accessToken);
+        }
+
+        let generateCallback = (...args) => {
+            if (args[0]) {
+                this.logger.error(
+                    {
+                        err: args[0],
+                        tnx: 'OAUTH2',
+                        user: this.options.user,
+                        action: 'renew'
+                    },
+                    'Failed generating new Access Token for %s',
+                    this.options.user
+                );
+            } else {
+                this.logger.info(
+                    {
+                        tnx: 'OAUTH2',
+                        user: this.options.user,
+                        action: 'renew'
+                    },
+                    'Generated new Access Token for %s',
+                    this.options.user
+                );
+            }
+            callback(...args);
+        };
+
+        if (this.provisionCallback) {
+            this.provisionCallback(this.options.user, !!renew, (err, accessToken, expires) => {
+                if (!err && accessToken) {
+                    this.accessToken = accessToken;
+                    this.expires = expires || 0;
+                }
+                generateCallback(err, accessToken);
+            });
+        } else {
+            this.generateToken(generateCallback);
+        }
+    }
+
+    /**
+     * Updates token values
+     *
+     * @param {String} accessToken New access token
+     * @param {Number} timeout Access token lifetime in seconds
+     *
+     * Emits 'token': { user: User email-address, accessToken: the new accessToken, timeout: TTL in seconds}
+     */
+    updateToken(accessToken, timeout) {
+        this.accessToken = accessToken;
+        timeout = Math.max(Number(timeout) || 0, 0);
+        this.expires = (timeout && Date.now() + timeout * 1000) || 0;
+
+        this.emit('token', {
+            user: this.options.user,
+            accessToken: accessToken || '',
+            expires: this.expires
+        });
+    }
+
+    /**
+     * Generates a new XOAuth2 token with the credentials provided at initialization
+     *
+     * @param {Function} callback Callback function with error object and token string
+     */
+    generateToken(callback) {
+        let urlOptions;
+        let loggedUrlOptions;
+        if (this.options.serviceClient) {
+            // service account - https://developers.google.com/identity/protocols/OAuth2ServiceAccount
+            let iat = Math.floor(Date.now() / 1000); // unix time
+            let tokenData = {
+                iss: this.options.serviceClient,
+                scope: this.options.scope || 'https://mail.google.com/',
+                sub: this.options.user,
+                aud: this.options.accessUrl,
+                iat,
+                exp: iat + this.options.serviceRequestTimeout
+            };
+            let token;
+            try {
+                token = this.jwtSignRS256(tokenData);
+            } catch (err) {
+                return callback(new Error('Can\x27t generate token. Check your auth options'));
+            }
+
+            urlOptions = {
+                grant_type: 'urn:ietf:params:oauth:grant-type:jwt-bearer',
+                assertion: token
+            };
+
+            loggedUrlOptions = {
+                grant_type: 'urn:ietf:params:oauth:grant-type:jwt-bearer',
+                assertion: tokenData
+            };
+        } else {
+            if (!this.options.refreshToken) {
+                return callback(new Error('Can\x27t create new access token for user'));
+            }
+
+            // web app - https://developers.google.com/identity/protocols/OAuth2WebServer
+            urlOptions = {
+                client_id: this.options.clientId || '',
+                client_secret: this.options.clientSecret || '',
+                refresh_token: this.options.refreshToken,
+                grant_type: 'refresh_token'
+            };
+
+            loggedUrlOptions = {
+                client_id: this.options.clientId || '',
+                client_secret: (this.options.clientSecret || '').substr(0, 6) + '...',
+                refresh_token: (this.options.refreshToken || '').substr(0, 6) + '...',
+                grant_type: 'refresh_token'
+            };
+        }
+
+        Object.keys(this.options.customParams).forEach(key => {
+            urlOptions[key] = this.options.customParams[key];
+            loggedUrlOptions[key] = this.options.customParams[key];
+        });
+
+        this.logger.debug(
+            {
+                tnx: 'OAUTH2',
+                user: this.options.user,
+                action: 'generate'
+            },
+            'Requesting token using: %s',
+            JSON.stringify(loggedUrlOptions)
+        );
+
+        this.postRequest(this.options.accessUrl, urlOptions, this.options, (error, body) => {
+            let data;
+
+            if (error) {
+                return callback(error);
+            }
+
+            try {
+                data = JSON.parse(body.toString());
+            } catch (E) {
+                return callback(E);
+            }
+
+            if (!data || typeof data !== 'object') {
+                this.logger.debug(
+                    {
+                        tnx: 'OAUTH2',
+                        user: this.options.user,
+                        action: 'post'
+                    },
+                    'Response: %s',
+                    (body || '').toString()
+                );
+                return callback(new Error('Invalid authentication response'));
+            }
+
+            let logData = {};
+            Object.keys(data).forEach(key => {
+                if (key !== 'access_token') {
+                    logData[key] = data[key];
+                } else {
+                    logData[key] = (data[key] || '').toString().substr(0, 6) + '...';
+                }
+            });
+
+            this.logger.debug(
+                {
+                    tnx: 'OAUTH2',
+                    user: this.options.user,
+                    action: 'post'
+                },
+                'Response: %s',
+                JSON.stringify(logData)
+            );
+
+            if (data.error) {
+                return callback(new Error(data.error));
+            }
+
+            if (data.access_token) {
+                this.updateToken(data.access_token, data.expires_in);
+                return callback(null, this.accessToken);
+            }
+
+            return callback(new Error('No access token'));
+        });
+    }
+
+    /**
+     * Converts an access_token and user id into a base64 encoded XOAuth2 token
+     *
+     * @param {String} [accessToken] Access token string
+     * @return {String} Base64 encoded token for IMAP or SMTP login
+     */
+    buildXOAuth2Token(accessToken) {
+        let authData = ['user=' + (this.options.user || ''), 'auth=Bearer ' + (accessToken || this.accessToken), '', ''];
+        return Buffer.from(authData.join('\x01'), 'utf-8').toString('base64');
+    }
+
+    /**
+     * Custom POST request handler.
+     * This is only needed to keep paths short in Windows – usually this module
+     * is a dependency of a dependency and if it tries to require something
+     * like the request module the paths get way too long to handle for Windows.
+     * As we do only a simple POST request we do not actually require complicated
+     * logic support (no redirects, no nothing) anyway.
+     *
+     * @param {String} url Url to POST to
+     * @param {String|Buffer} payload Payload to POST
+     * @param {Function} callback Callback function with (err, buff)
+     */
+    postRequest(url, payload, params, callback) {
+        let returned = false;
+
+        let chunks = [];
+        let chunklen = 0;
+
+        let req = fetch(url, {
+            method: 'post',
+            headers: params.customHeaders,
+            body: payload,
+            allowErrorResponse: true
+        });
+
+        req.on('readable', () => {
+            let chunk;
+            while ((chunk = req.read()) !== null) {
+                chunks.push(chunk);
+                chunklen += chunk.length;
+            }
+        });
+
+        req.once('error', err => {
+            if (returned) {
+                return;
+            }
+            returned = true;
+            return callback(err);
+        });
+
+        req.once('end', () => {
+            if (returned) {
+                return;
+            }
+            returned = true;
+            return callback(null, Buffer.concat(chunks, chunklen));
+        });
+    }
+
+    /**
+     * Encodes a buffer or a string into Base64url format
+     *
+     * @param {Buffer|String} data The data to convert
+     * @return {String} The encoded string
+     */
+    toBase64URL(data) {
+        if (typeof data === 'string') {
+            data = Buffer.from(data);
+        }
+
+        return data
+            .toString('base64')
+            .replace(/[=]+/g, '') // remove '='s
+            .replace(/\+/g, '-') // '+' → '-'
+            .replace(/\//g, '_'); // '/' → '_'
+    }
+
+    /**
+     * Creates a JSON Web Token signed with RS256 (SHA256 + RSA)
+     *
+     * @param {Object} payload The payload to include in the generated token
+     * @return {String} The generated and signed token
+     */
+    jwtSignRS256(payload) {
+        payload = ['{"alg":"RS256","typ":"JWT"}', JSON.stringify(payload)].map(val => this.toBase64URL(val)).join('.');
+        let signature = crypto.createSign('RSA-SHA256').update(payload).sign(this.options.privateKey);
+        return payload + '.' + this.toBase64URL(signature);
+    }
+}
+
+module.exports = XOAuth2;
diff --git a/server/node_modules/nodemailer/package.json b/server/node_modules/nodemailer/package.json
new file mode 100644
index 0000000..0ca8d8b
--- /dev/null
+++ b/server/node_modules/nodemailer/package.json
@@ -0,0 +1,74 @@
+{
+  "_from": "nodemailer",
+  "_id": "nodemailer@6.4.11",
+  "_inBundle": false,
+  "_integrity": "sha512-BVZBDi+aJV4O38rxsUh164Dk1NCqgh6Cm0rQSb9SK/DHGll/DrCMnycVDD7msJgZCnmVa8ASo8EZzR7jsgTukQ==",
+  "_location": "/nodemailer",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "tag",
+    "registry": true,
+    "raw": "nodemailer",
+    "name": "nodemailer",
+    "escapedName": "nodemailer",
+    "rawSpec": "",
+    "saveSpec": null,
+    "fetchSpec": "latest"
+  },
+  "_requiredBy": [
+    "#USER",
+    "/"
+  ],
+  "_resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.11.tgz",
+  "_shasum": "1f00b4ffd106403f17c03f3d43d5945b2677046c",
+  "_spec": "nodemailer",
+  "_where": "/home/sigonasr2/divar/server",
+  "author": {
+    "name": "Andris Reinman"
+  },
+  "bugs": {
+    "url": "https://github.com/nodemailer/nodemailer/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Easy as cake e-mail sending from your Node.js applications",
+  "devDependencies": {
+    "bunyan": "1.8.14",
+    "chai": "4.2.0",
+    "eslint-config-nodemailer": "1.2.0",
+    "eslint-config-prettier": "6.11.0",
+    "grunt": "1.2.1",
+    "grunt-cli": "1.3.2",
+    "grunt-eslint": "23.0.0",
+    "grunt-mocha-test": "0.13.3",
+    "libbase64": "1.2.1",
+    "libmime": "5.0.0",
+    "libqp": "1.1.0",
+    "mocha": "8.0.1",
+    "nodemailer-ntlm-auth": "1.0.1",
+    "proxy": "1.0.2",
+    "proxy-test-server": "1.0.0",
+    "sinon": "9.0.2",
+    "smtp-server": "3.7.0"
+  },
+  "engines": {
+    "node": ">=6.0.0"
+  },
+  "homepage": "https://nodemailer.com/",
+  "keywords": [
+    "Nodemailer"
+  ],
+  "license": "MIT",
+  "main": "lib/nodemailer.js",
+  "name": "nodemailer",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/nodemailer/nodemailer.git"
+  },
+  "scripts": {
+    "postinstall": "node -e \"try{require('./postinstall')}catch(e){}\"",
+    "test": "grunt"
+  },
+  "version": "6.4.11"
+}
diff --git a/server/node_modules/nodemailer/postinstall.js b/server/node_modules/nodemailer/postinstall.js
new file mode 100644
index 0000000..587055f
--- /dev/null
+++ b/server/node_modules/nodemailer/postinstall.js
@@ -0,0 +1,101 @@
+/* eslint no-control-regex:0  */
+'use strict';
+
+const packageData = require('./package.json');
+const isEnabled = value => !!value && value !== '0' && value !== 'false';
+const canUseColor = isEnabled(process.env.npm_config_color);
+
+const title = `=== Nodemailer ${packageData.version} ===`;
+const text = `
+Thank you for using Nodemailer for your email sending needs! While Nodemailer itself is mostly meant to be a SMTP client there are other related projects in the Nodemailer project as well.
+
+> IMAP API ( https://imapapi.com ) is a server application to easily access IMAP accounts via REST API
+> ImapFlow ( https://imapflow.com/ ) is an async IMAP client library for Node.js
+> NodemailerApp ( https://nodemailer.com/app/ ) is a cross platform GUI app to debug emails
+> Project Pending ( https://projectpending.com/ ) allows you to host DNS of your project domains
+> Pending DNS ( https://pendingdns.com/ ) is the DNS server used that powers Project Pending
+> Ethereal Email ( https://ethereal.email/ ) is an email testing service that accepts all your test emails
+`;
+
+const footer = `Don't like this message?
+There's a Github Sponsors goal to remove it
+https://github.com/sponsors/andris9
+`;
+
+const secs = 4;
+
+const formatCentered = (row, columns) => {
+    return row
+        .split(/\r?\n/)
+        .map(row => {
+            if (columns <= row.length) {
+                return row;
+            }
+
+            return ' '.repeat(Math.round(columns / 2 - row.length / 2)) + row;
+        })
+        .join('\n');
+};
+
+const formatRow = (row, columns) => {
+    if (row.length <= columns) {
+        return [row];
+    }
+    // wrap!
+    let lines = [];
+    while (row.length) {
+        if (row.length <= columns) {
+            lines.push(row);
+            break;
+        }
+        let slice = row.substr(0, columns);
+
+        let prefix = slice.charAt(0) === '>' ? '  ' : '';
+
+        let match = slice.match(/(\s+)[^\s]*$/);
+        if (match && match.index) {
+            let line = row.substr(0, match.index);
+            row = prefix + row.substr(line.length + match[1].length);
+            lines.push(line);
+        } else {
+            lines.push(row);
+            break;
+        }
+    }
+    return lines;
+};
+
+const wrapText = text => {
+    let columns = Number(process.stdout.columns) || 80;
+    columns = Math.min(columns, 80) - 1;
+
+    return (
+        (formatCentered(title, columns) + '\n' + text)
+            .split('\n')
+            .flatMap(row => formatRow(row, columns))
+            .join('\n') +
+        '\n' +
+        formatCentered(footer, columns)
+    );
+};
+
+const banner = wrapText(text)
+    .replace(/^/gm, '\u001B[96m')
+    .replace(/$/gm, '\u001B[0m')
+    .replace(/(https:[^\s)]+)/g, '\u001B[94m $1 \u001B[96m');
+
+console.log(canUseColor ? banner : banner.replace(/\u001B\[\d+m/g, ''));
+if (canUseColor) {
+    process.stdout.write('\u001B[96m');
+}
+
+setInterval(() => {
+    process.stdout.write('.');
+}, 500);
+
+setTimeout(() => {
+    if (canUseColor) {
+        process.stdout.write('\u001B[0m\n');
+    }
+    process.exit(0);
+}, secs * 1000 + 100);
diff --git a/server/package-lock.json b/server/package-lock.json
index 0e74b59..b8c7d12 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -1085,6 +1085,11 @@
       "resolved": "https://registry.npmjs.org/node-bitmap/-/node-bitmap-0.0.1.tgz",
       "integrity": "sha1-GA6scAPgxwdhjvMTaPYvhLKmkJE="
     },
+    "nodemailer": {
+      "version": "6.4.11",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.11.tgz",
+      "integrity": "sha512-BVZBDi+aJV4O38rxsUh164Dk1NCqgh6Cm0rQSb9SK/DHGll/DrCMnycVDD7msJgZCnmVa8ASo8EZzR7jsgTukQ=="
+    },
     "nopt": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz",
diff --git a/server/package.json b/server/package.json
index cdbb6aa..32e3b06 100644
--- a/server/package.json
+++ b/server/package.json
@@ -11,13 +11,10 @@
   "dependencies": {
     "axios": "^0.19.2",
     "connect-timeout": "^1.9.0",
-    "crypto": "^1.0.1",
     "express": "^4.17.1",
     "express-fileupload": "^1.1.9",
-    "get-pixels": "^3.3.2",
-    "image-pixels": "^2.2.2",
+    "nodemailer": "^6.4.11",
     "pg": "^8.2.1",
-    "readimage": "^1.1.1",
     "request": "^2.88.2",
     "twitter-autohook": "^1.7.1",
     "unzipper": "^0.10.11"