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Mailtrain

Mailtrain is a self hosted newsletter application built on Node.js (v7+) and MySQL (v5.5+ or MariaDB).

Mailtrain requires at least Node.js v7. If you want to use an older version of Node.js then you should use version v1.24 of Mailtrain. You can either download it here or if using git then run git checkout v1.24.0 before starting it

Features

Mailtrain supports subscriber list management, list segmentation, custom fields, email templates, large CSV list import files, etc.

Subscribe to Mailtrain Newsletter here (uses Mailtrain obviously)

Contents

Official Partners

iRedMail

iRedMail Free, open source mail server solution

ZoneMTA

Check out ZoneMTA as an alternative self hosted MTA

Cons

  • Beta-grade software. Might or might not work as expected. There are several users with list sizes between 100k and 1M and Mailtrain seems to work for them but YMMV
  • Almost no documentation (there are some guides in the Wiki)

Requirements

  • Nodejs v7+
  • MySQL v5.5 or MariaDB
  • Redis. Optional, disabled by default. Used for session storage and for caching state between multiple processes. If you do not have Redis enabled then you can only use a single sender process

Installation

Simple Install (Ubuntu)

You can download and run install.sh in your blank Ubuntu VPS to set up Mailtrain and all required dependencies (including MySQL). The installation script assumes a somewhat blank server, so if this is a machine you are already using for something else, you might want to skip the automatic install and proceed manually.

If you like living on the edge and feel adventurous you can run the installation script directly from your command line as root:

curl https://raw.githubusercontent.com/Mailtrain-org/mailtrain/master/setup/install.sh | sudo bash

Install script installs and sets up the following:

  • Node.js (version 6.x)
  • MariaDB (the default version from apt-get)
  • Mailtrain (from the master branch) on port 80
  • ImageMagick (the default version from apt-get)
  • UFW firewall that blocks everything besides ports 22, 25, 80, 443
  • ZoneMTA to queue and deliver messages (NB! using ZoneMTA assumes that outgoing port 25 is open which might not be the case on some hosts like on the Google Cloud)
  • Redis server for session cache
  • logrotate to rotate Mailtrain log files
  • upstart or systemd init script to automatically start and manage Mailtrain process

After the install script has finished and you see a success message then you should have a Mailtrain instance running at http://yourdomain.com

Next steps after installation

1. Change admin password

Navigate to http://yourdomain.com where yourdomain.com is the address of your server. Click on the Sign In link in the right top corner of the page. Authenticate with the following credentials:

  • Username: admin
  • Password: test

Once authenticated, click on your username in the right top corner of the page and select "Account". Now you should be able to change your default password.

2. Update page configuration

If signed in navigate to http://yourdomain.com/settings and check that all email addresses and domain names are correct. Mailtrain default installation comes bundled with ZoneMTA, so you should be able to send out messages right away. ZoneMTA even handles a lot of bounces (not all kind of bounces though) automatically so you do not have to change anything in the SMTP settings to get going.

3. Set up SPF

If you are using the bundled ZoneMTA then you need to add your Mailtrain host to the SPF DNS record of your sending domain. So if you are sending messages as "[email protected]" then the domain "example.com" should have a SPF DNS record that points to the IP address or hostname of your Mailtrain host. Everything should work without the SPF record but setting it up correctly improves the deliverability a lot.

4. Set up DKIM

If you are using the bundled ZoneMTA then you can provide a DKIM key to sign all outgoing messages. You can provide the DKIM private key in Mailtrain Settings page. This key is only used by ZoneMTA, so if you are using some other provider then you check your providers' documentation to see how to set up DKIM. In case of ZoneMTA you only need to open Mailtrain Settings page, scroll to DKIM config section and fill the fields for DKIM selector and DKIM private key. Everything should work without the DKIM signatures but setting it up correctly improves the deliverability a lot.

5. Set up VERP

The bundled ZoneMTA can already handle a large amount of bounces if you use it to deliver messages but not all - namely such bounces that happen after the recipient MX accepts the message for local delivery. This might happen for example when a user exists, so the MX accepts the message but the quota for that user is checked only when actually storing the message to users' mailbox. Then a bounce message is generated and sent to the original sender which in your case is the mail address you are sending your list messages from. You can catch these messages and mark such recipients manually as bounced but alternatively you can set up a VERP based bounce handler that does this automatically. In this case the sender on the message envelope would not be your actual address but a rewritten bounce address that points to your Mailtrain installation.

To set it up you need to create an additonal DNS MX entry for a bounce domain, eg "bounces.example.com" if you are sending from "example.com". This entry should point to your Mailtrain server IP address. Next you should enable the VERP handling in Mailtrain Settings page.

As ZoneMTA uses envelope sender as the default for DKIM addresses, then if using VERP you need to set up DKIM to your bounce domain instead of sender domain and also store the DKIM key as "bouncedomain.selector.pem" in the ZoneMTA key folder.

If you do not use VERP with ZoneMTA then you should get notified most of the bounces so everything should mostly work without it

6. Set up proper PTR record

If you are using the bundled ZoneMTA then you should make sure you are using a proper PTR record for your server. For example if you use DigitalOcean then PTR is set automatically (it's the droplet name, so make sure your droplet name is the same as the domain name you are running Mailtrain from). If you use AWS then you can request setting up PTR records using this form (requires authentication). Otherwise you would have to check from your service provider, hot to get the PTR record changed. Everything should work without the PTR record but setting it up correctly improves the deliverability a lot.

7. Ready to send!

With proper SPF, DKIM and PTR records (DMARC wouldn't hurt either) I got perfect 10/10 score out from MailTester when sending a campaign message to a MailTester test address. I did not have VERP turned on, so the sender address matched return path address.

Simple Install (Docker)

Requirements:
* Docker
* docker-compose
  1. Download Mailtrain files using git: git clone git://github.com/Mailtrain-org/mailtrain.git (or download zipped repo) and open Mailtrain folder cd mailtrain
  2. Run sudo docker build -t mailtrain-node:latest .
  3. Copy default.toml to production.toml. Run sudo mkdir -p /etc/mailtrain && sudo cp config/default.toml /etc/mailtrain/production.toml
  4. Create /etc/docker-compose.yml. Example (dont forget change MYSQL_ROOT_PASS and MYSQL_USER_PASSWORD to your passwords):
version: '2'
services:
  mailtrain-mysql:
      image: mysql:latest
      ports:
        - "3306:3306"
      container_name: "mailtrain-mysql"
      restart: always
      environment:
         MYSQL_ROOT_PASSWORD: "MYSQL_ROOT_PASS"
         MYSQL_DATABASE: "mailtrain"
         MYSQL_USER: "mailtrain"
         MYSQL_PASSWORD: "MYSQL_USER_PASSWORD"
      volumes:
         - mailtrain-mysq-data:/var/lib/mysql

  mailtrain-redis:
      image: redis:3.0
      container_name: "mailtrain-redis"
      volumes:
         - mailtrain-redis-data:/data

  mailtrain-node:
    image: mailtrain-node:latest
    container_name: "mailtrain-node"
    links:
      - "mailtrain-mysql:mailtrain-mysql"
      - "mailtrain-redis:mailtrain-redis"
    ports:
      - "3000:3000"
    volumes:
      - "/etc/mailtrain/production.toml:/app/config/production.toml"
      - "mailtrain-node-data:/app/public/grapejs/uploads"
      - "mailtrain-node-data:/app/public/mosaico/uploads"
volumes:
  mailtrain-mysq-data: {}
  mailtrain-redis-data: {}
  mailtrain-node-data: {}

  1. Update MySQL and Redis credintial in /etc/mailtrain/production.toml like this:
[mysql]
host="mailtrain-mysql"
user="mailtrain"
password="MYSQL_USER_PASSWORD"
database="mailtrain"
port=3306
charset="utf8mb4"
timezone="UTC"

[redis]
enabled=true
host="mailtrain-redis"
port=6379
db=5
  1. Run docker container with command sudo docker-compose -f /etc/docker-compose.yml up -d
  2. Open http://localhost:3000/
  3. Authenticate as admin:test
  4. Navigate to http://localhost:3000/settings and update service configuration
  5. Navigate to http://localhost:3000/users/account and update user information and password

Manual Install (any OS that supports Node.js)

  1. Download Mailtrain files using git: git clone git://github.com/Mailtrain-org/mailtrain.git (or download zipped repo) and open Mailtrain folder cd mailtrain
  2. Run npm install --production in the Mailtrain folder to install required dependencies
  3. Copy config/default.toml as config/production.toml and update MySQL and any other settings in it
  4. Run the server NODE_ENV=production npm start
  5. Open http://localhost:3000/
  6. Authenticate as admin:test
  7. Navigate to http://localhost:3000/settings and update service configuration
  8. Navigate to http://localhost:3000/users/account and update user information and password

Upgrade

  • Replace old files with new ones by running in the Mailtrain folder git pull origin master if you used Git to set Mailtrain up or just download new files and replace old ones with these
  • Run npm install --production in the Mailtrain folder

Using Environment Variables

Some servers expose custom port and hostname options through environment variables. To support these, create a new configuration file config/local.js:

module.exports = {
    www: {
        port: process.env.OPENSHIFT_NODEJS_PORT,
        host: process.env.OPENSHIFT_NODEJS_IP
    }
};

Mailtrain uses node-config for configuration management and thus the config files are loaded in the following order:

  1. default.toml
  2. {NODE_ENV}.toml (eg. development.toml or production.toml)
  3. local.js

Running Behind Nginx Proxy

Edit mailtrain.nginx (update server_name directive) and copy it to /etc/nginx/sites-enabled

Running as an Upstart Service in Ubuntu 14.04

Edit mailtrain.conf (update application folder) and copy it to /etc/init

Subscription Widget

The (experimental) Mailtrain Subscription Widget allows you to embed your sign-up forms on your website. To embed a Widget, you need to:

Enable cross-origin resource sharing in your config file and whitelist your site:

[cors]
# Allow subscription widgets to be embedded
origins=['https://www.example.com']

Embed the widget code on your website:

<div data-mailtrain-subscription-widget data-url="http://domain/subscription/Byf44R-og/widget">
    <a href="http://domain/subscription/Byf44R-og">Subscribe to our list</a>
</div>
<script src="http://domain/subscription/widget.js"></script>

Cloudron

You can easily install and self-host Mailtrain on the Cloudron to send newsletters from your custom domain:

Install

The source code for the Cloudron app is here.

Bounce Handling

Mailtrain uses webhooks integration to detect bounces and spam complaints. Currently supported webhooks are:

  • AWS SES – create a SNS topic for complaints and bounces and use http://domain/webhooks/aws as the subscriber URL for these topics
  • SparkPost – use http://domain/webhooks/sparkpost as the webhook URL for bounces and complaints (instructions)
  • SendGrid – use http://domain/webhooks/sendgrid as the webhook URL for bounces and complaints (instructions)
  • Mailgun – use http://domain/webhooks/mailgun as the webhook URL for bounces and complaints (instructions)
  • ZoneMTA – use http://domain/webhooks/zone-mta as the webhook URL for bounces. If you install Mailtrain with the included installation script then this route gets set up automatically during the installation process
  • Postfix – This is not a webhook but a TCP server on port 5699 to listen for piped Postfix logs. Enable it with the [postfixbounce] config option. To use it, pipe the log to that port using tail: tail -F /var/log/mail.log | nc localhost 5699 - (if Mailtrain restarts then you need to re-establish the tail pipe), alternatively you could send the log with a cron job periodically tail -n 100 | nc localhost 5699 -.

Additionally Mailtrain (v1.1+) is able to use VERP-based bounce handling. This would require to have a compatible SMTP relay (the services mentioned above strip out or block VERP addresses in the SMTP envelope) and you also need to set up special MX DNS name that points to your Mailtrain installation server.

If using VERP with iRedMail, see this post for correct configuration as iRedMail blocks by default senders that do not match authentication username (VERP address and user account address are different).

Testing

There is a built in /dev/null server in Mailtrain that you can use to load test your installation. Check the [testserver] section in the configuration file for details. By default the test server is disabled. The server uses only cleartext connections, so select "Do not use encryption" in the encryption settings when setting up the server data in Mailtrain.

Additionally you can generate CSV import files with fake subscriber data:

node setup/fakedata.js > somefile.csv

This command generates a CSV file with 100 000 subscriber accounts

Translations

Mailtrain is currently not translated but it supports translations. To add translations you first need to add translation support for the translatable strings. To test if strings are translatable or not, use a fake language with code "zz"

language="zz"

This would modify all input strings. If a string is not modified then it does not support translations.

Translating JavaScript Files

To translate JavaScript strings you need to make sure that you have loaded the translating function _ from './lib/translate.js'. If you want to use variables in strings then you also need the 'util' module.

const _ = require('./path/to/lib/translate')._;
const util = require('util'); // optional

All you need to do to translate strings is to enclose these in the _() function

let str1 = _('This string will be translated');
let str2 = util.format( _('My name is "%s"'), 'Mailtrain');

Translating Handlebars Files

Enclose translatable strings to {{#translate}} tags

<p>
    Mailtrain – {{#translate}}the best newsletter app{{/translate}}
</p>

Managing Translations

  • Translations are loaded from Gettext MO files. In order to generate such files you need a Gettext translations editor. POEdit is a great choice.

  • To create the translation catalog run grunt from command line. This fetches all translatable strings from JavaScript and Handlebars files and merges these into the translation catalog located at /languages/mailtrain.pot

  • To add a new language use this catalog file as source. Once you want to update your translation file from the updated catalog, then select "Catalogue" -> "Update from POT file..." in POEdit and select mailtrain.pot. This would merge all new translations from the POT file to your PO file. *If you have saved the PO file in ./languages then POEdit should auto generate required MO file whenever you hit save for the PO file.

  • Once you have a correct MO file in the languages folder, then edit Mailtrain config and set "language" option to your language name. If the value is "et" then Mailtrain loads translations from ./languages/et.mo

NB! For now translation settings are global, so if you have set a translation in config then this applies to all users. An user can't select another translation than the default even if there is a translation file. This is because current Mailtrain code does not provide request context to functions and the functions generating strings do not know which language to use.

License

  • Versions 1.22.0 and up GPL-V3.0
  • Versions 1.21.0 and up: EUPL-1.1
  • Versions 1.19.0 and up: MIT
  • Up to versions 1.18.0 GPL-V3.0

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