Last year we wrote about MailCatcher, a gem developed by our own Sam Cochran (@sj26). MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface.

There have been many updates in that time, and MailCatcher has picked up a bit of a following too. It’s still a great tool, so if you’re a developer you should check it out.

Here’s some feedback from around the web:

  • “Ruby Mailcatcher should be deployed in every local development environment, regardless of whether you’re using Ruby.” – @brightball (link)
  • “Learn about one of @srbiv’s favorite gems – our latest blog post:” – @highgroove (link)
  • “MailCatcher is one of the better email testing gems I’ve seen.” – @hkarthik (link)

The latest version is 0.5.5 and can be accessed at or Github