If you ever wanted to send emails asynchronously using your current Resque setup, this is the right gem for you. resque_action_mailer_backend integrates cleanly with your Rails application and lets you deliver emaisl out of the request cycle by sending the generated emails using one of your Resque workers. It doesn’t ask you to call fancy methods, inherit from new classes or anything, just tell ActionMailer to send using :resque and you’re done. More here.