With this gem you will be able to enqueue your emails on your Resque workers to avoid making your user wait for the email to be send when he causes an email sending action in your application. Using resque_action_mailer_backend makes email sending a breeze as you will be able to use Resque to retry failed emails, easily deliver all those marketing emails to your clients and without changing anything at your email sending code. Just tell your application to use :resque for sending emails and you're done, no need to add yet another tool just for delivering your emails if you're already using Resque for your asynchronous processing.