Slacker

Slacker is simple email-to-slack gateway. It support basic rules for routing messages to different slack channels from different bots.

Main purpose of slacker is to redirect messages from old-school systems which doesn't support messaging other than email. For example cron and monit (https://mmonit.com/monit/) support only emails as the only system for notifications.

Installation

Slacker can be easily installed via docker:

docker pull ontrif/slacker

Then run container with custom slacker config.yml:

docker run \
    -d --restart=always \
    --name=slacker \
    -v /path/to/config.yml:/etc/slacker/config.yml \
    -p localhost:8025:8025 \
    ontrif/slacker

Last command will start SMTP server on localhost:8025

Config

Slacker supports simple list of rules for configuring target slack channel, bot name and its avatar depending on email content.

There are two sections:

• default: this is default options for sending message to slack.
• rules: list of rules for matching email message against 'from', 'to' and/or 'subject'.

Each rule in list tested in order. First matched rule is used to update options values from 'default' section of config.

Example config.yml for redirecting email to two channels: #monit and #cron:

# default values for channel, bot name, avatar url, slack token and debug mode
default:
    channel: "#general"
    username: "slacker"
    icon_url: ""
    slack_token: "xoxb-00000000000-aaaaaaaaaaaaaaaaaaaaaaaa"
    debug: false


# list of rules
rules:
    - name: "Monit rule"
      from: "monit@.*"     # all emails from monit@localhost will match this rule

      options:
          username: "monit"
          channel: "#monit"
          icon_url: "https://bitbucket.org/tildeslash/monit/avatar/128"
          debug: false


    - name: "Cron rule"
      from: "root@localhost"
      subject: "Cron.*"    # cron email subject starts with "Cron..."

      options:
          username: "cron"
          channel: "#cron"
          icon_url: ""
          debug: true    # will output full email with all X-headers