actionmailer-javamail

https://github.com/rykov/actionmailer-javamail

ActionMailer-JavaMail allows the emails to be delivered via the JavaMail library. This allows to expand the capabilities of ActionMailer in the jRuby environment via existing JavaMail capabilities. The current capabilities are only implemented to send outgoing email without any support for incoming email. Action Mailer is the part of the Ruby on Rails framework that's designing email-service layers.