We're delighted to announce that we've just open sourced our e-mail delivery platform, Postal. Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers. We wrote Postal to handle all our own e-mail sending requirements and use it internally to deliver mail from Codebase, Deploy, Sirportly as well as all our other applications.
Since we open sourced Postal, we've had an excellent reception on GitHub and have enjoyed working with new users to help get it up and running on their servers and ensure it runs as smoothly as possible.