Mailluloid

https://github.com/thailehuy/mailluloid

Inspired by one of the gem I saw in the last conference: Celluloid, I made the gem Mailluloid (Mail + Celluloid)

In your Gemfile, include the gem

gem 'mailluloid'

How to use:

1. Install the gem
2. ???
3. Profit!

Then use your mailer as normal. Mailluloid will push all mail sending to background thread, and terminate them after done, so no memory leaks. You now have a non-blocking mailer.

This is useful if you wanna run mailer on Heroku but do not want to pay for a worker just to deliver mail. No more Resque mailer, no more Sidekiq painful setup

Caveats:

1. All mailers exception are in the child thread, so you can't handle them. (but since you are using a background process for mailer, who care?)
   
2. Only works with ActionMailer