MatterMail

MatterMail is an integration service for Mattermost, MatterMail listen an email box and publish all received emails in channels or users in Mattermost.

Install

Download the Latest Version

Usage

1. You need to create an user in Mattermost server and you can use MatterMail icon as profile picture.

2. Get the Team and Channels and check if the user has permission to post in these channels

3. Edit the file config.json

4. Execute the command to put in background

./mattermail > /var/log/mattermail.log 2>&1 &

Migrate configuration

To upgrade the config.json to new version using this command:

./mattermail migrate -c ./config.json > ./new_config.json

Configuration

Minimal configuration:

{
    "Directory": "./data/",
    "Profiles":[
        {
            "Name":              "Orders",
            "Channels":          ["#orders"],

            "Email":{
                "ImapServer":        "imap.example.com:143",
                "Username":          "[email protected]",
                "Password":          "password"
            },

            "Mattermost":{
                "Server":   "https://mattermost.example.com",
                "Team":     "team1",
                "User":     "[email protected]",
                "Password": "password"
            }
        }
    ]
}

Directory

Location where the cache is stored, default value is ./data/

Profiles

You can set multiple profiles using different names

Email

Email configuration, used to access IMAP server

Mattermost

Mattermost configuration

MailTemplate

This configuration formats email message using markdown to post on Mattermost. The default configuration is 📨 _From: **{{.From}}**_\n>_{{.Subject}}_\n\n{{.Message}}, in this example when Mattermail receives a message from [email protected], with subject Hello world and message body Hi I'm John. This email will be formated to:

:incoming*envelope: _From: [email protected]*

Hello world

Hi I'm John

RedirectBySubject

If the option RedirectBySubject is true the Mattermail will try to redirect an email and post it using the subject, ex:

Filter

This option is used to redirect email following the rules.

"Filter":            [
    /* if subject contains 'Feature' redirect to #feature */
    {"Subject":"Feature", "Channels": ["#feature"]},

    /* if from contains '[email protected]' and subject contains 'to me' redirect to @test2*/
    {"From":"[email protected]", "Subject":"To Me", "Channels": ["@test2"]},

    /* if from contains '@companyb.com' redirect to #companyb and @john */
    {"From":"@companyb.com", "Channels": ["#companyb", "@john"]} /**/
]

Team/Channel

You can find team and channel name by URL ex:

Sequence that the email will be redirected

Mattermail post the email using this rules:

1 - Try to post using the subject if the option RedirectBySubject is true

2 - Try to post following the Filter configuration.

3 - Post on channels/users defined on field Channels in config.json

Options

$ ./mattermail --help
Usage:
    mattermail server  Starts Mattermail server
    mattermail migrate Migrates config.json to new version

For more details execute:

    mattermail [command] --help

Building

You need Go to build this project

go get github.com/rodcorsi/mattermail

Mattermail as a service

Using systemd

Considering your installation under /opt/mattermail, add /etc/systemd/system/mattermail.service file with the following content:

# mattermail
[Unit]
Description=mattermail server

[Service]
Type=simple
WorkingDirectory=/opt/mattermail
ExecStart=/opt/mattermail/mattermail server -c config.json
Nice=5

[Install]
WantedBy=multi-user.target

Enable service:

systemctl enable mattermail

Start service:

systemctl start mattermail

View status:

systemctl status mattermail

View log:

journalctl -f -u mattermail.service