mail_room

mail_room is a configuration based process that will idle on IMAP connections and POST to a delivery URL whenever a new message is received on the configured mailbox and folder.

Build Status Code Climate

Installation

Add this line to your application's Gemfile:

gem 'mail_room'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mail_room

You will also need to install faraday or letter_opener if you use the postback or letter_opener delivery methods, respectively.

Usage

mail_room -c /path/to/config.yml

Note: To ignore missing config file or missing mailboxes key, use -q or --quiet

Configuration

---
:mailboxes:
  -
    :email: "[email protected]"
    :password: "password"
    :name: "inbox"
    :search_command: 'NEW'
    :delivery_options:
      :delivery_url: "http://localhost:3000/inbox"
      :delivery_token: "abcdefg"

  -
    :email: "[email protected]"
    :password: "password"
    :name: "inbox"
    :delivery_method: postback
    :delivery_options:
      :delivery_url: "http://localhost:3000/inbox"
      :delivery_token: "abcdefg"
  -
    :email: "[email protected]"
    :password: "password"
    :name: "inbox"
    :delivery_method: logger
    :delivery_options:
      :log_path: "/var/log/user3-email.log"
  -
    :email: "[email protected]"
    :password: "password"
    :name: "inbox"
    :delivery_method: letter_opener
    :delete_after_delivery: true
    :delivery_options:
      :location: "/tmp/user4-email"
  -
    :email: "[email protected]"
    :password: "password"
    :name: "inbox"
    :delivery_method: sidekiq
    :delivery_options:
      :redis_url: redis://localhost:6379
      :worker: EmailReceiverWorker

delivery_method

postback

Requires faraday gem be installed.

NOTE: If you're using Ruby >= 2.0, you'll need to use Faraday from >= 0.8.9. Versions before this seem to have some weird behavior with mail_room.

The default delivery method, requires delivery_url and delivery_token in configuration.

As the postback is essentially using your app as if it were an API endpoint, you may need to disable forgery protection as you would with a JSON API. In our case, the postback is plaintext, but the protection will still need to be disabled.

sidekiq

Deliver the message by pushing it onto the configured Sidekiq queue to be handled by a custom worker.

Requires redis gem to be installed.

Configured with :delivery_method: sidekiq.

Delivery options:

  • redis_url: The Redis server to connect with. Use the same Redis URL that's used to configure Sidekiq. Required, defaults to redis://localhost:6379.
  • namespace: The Redis namespace Sidekiq works under. Use the same Redis namespace that's used to configure Sidekiq. Optional.
  • queue: The Sidekiq queue the job is pushed onto. Make sure Sidekiq actually reads off this queue. Required, defaults to default.
  • worker: The worker class that will handle the message. Required.

An example worker implementation looks like this:

class EmailReceiverWorker
  include Sidekiq::Worker

  def perform(message)
    mail = Mail::Message.new(message)

    puts "New mail from #{mail.from.first}: #{mail.subject}"
  end
end

logger

Configured with :delivery_method: logger.

If :log_path: is not provided, defaults to STDOUT

noop

Configured with :delivery_method: noop.

Does nothing, like it says.

letter_opener

Requires letter_opener gem be installed.

Configured with :delivery_method: letter_opener.

Uses Ryan Bates' excellent letter_opener gem.

Receiving postback in Rails

If you have a controller that you're sending to, with forgery protection disabled, you can get the raw string of the email using request.body.read.

I would recommend having the mail gem bundled and parse the email using Mail.read_from_string(request.body.read).

Search Command

This setting allows configuration of the IMAP search command sent to the server. This still defaults 'UNSEEN'. You may find that 'NEW' works better for you.

IMAP Server Configuration

You can set per-mailbox configuration for the IMAP server's host (default: 'imap.gmail.com'), port (default: 993), and ssl (default: true).

If you're seeing the error Please log in via your web browser: https://support.google.com/mail/accounts/answer/78754 (Failure), you need to configure your Gmail account to allow less secure apps to access it: https://support.google.com/accounts/answer/6010255.

Running in Production

I suggest running with either upstart or init.d. Check out this wiki page for some example scripts for both: https://github.com/tpitale/mail_room/wiki/Init-Scripts-for-Running-mail_room

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
  6. If accepted, ask for commit rights

TODO

  1. specs, this is just a (working) proof of concept √
  2. finish code for POSTing to callback with auth √
  3. accept mailbox configuration for one account directly on the commandline; or ask for it
  4. add example rails endpoint, with auth examples
  5. add example configs for upstart/init.d √
  6. log to stdout √
  7. add a development mode that opens in letter_opener by ryanb √