mail_room is a configuration based process that will idle on IMAP connections
and execute a delivery method when a new message is received.
Examples of delivery methods include:

POST to a delivery URL (Postback)
Queue a job to Sidekiq or Que for later processing (Sidekiq or Que)
Log the message or open with LetterOpener (Logger or LetterOpener)

WWW: https://github.com/tpitale/mail_room