The mail gem has become the underlying library of Action Mailer with Rails 3, replacing TMail, but it's also capable of receiving email from a POP3 or IMAP account. I couldn't find any documentation for testing the retrieval, so I figured it out from the source - here's how you can test your inbound mail processing.
read on...The Errbit app is an open source Rails 3 app that is API-compatible with Thoughtbot's Hoptoad Notifier and thus allows you to roll your own exception tracking service for free on Heroku. Let's see how to set this up.
read on...How I'm using Ruby exceptions and Rails' rescue_from to keep controllers clean and
error response handling DRY and RESTful.