Receive and process incoming emails in Rails applications.

mail_room will proxy email (gmail) from IMAP to a delivery method

Simplify receiving email in Rails

Mailman makes it easy to process incoming emails with a simple routing DSL

Handling e-mail attachments with MIME type 'application/ms-tnef'

Sortah provides a simple, declarative internal DSL for sorting your email. It provides an executable which may serve as an external mail delivery agent for such programs as `getmail`. Finally, since your sorting logic is just Plain Old Ruby Code (PORC, as I like to call it). ...

download email from POP3 or IMAP and do stuff with it.

A plugin for accessing POP3/IMAP accounts in rails

A microframework for mail-centric applications