for some reason, this plugin was hard for me to find. I orginally got it from a github user named caritos but he's dropped the repository so I can't fork.
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lib
.DS_Store
MIT-LICENSE
README
init.rb

README

ActionMailerTls
===============

Use GMail SMTP server to send emails in Rails ActionMailer

Example
=======

Place code snippet in config/environment.rb

ActionMailer::Base.server_settings = {
  :address => "smtp.gmail.com",
  :port => 587,
  :domain => "mycompany.com",
  :authentication => :plain,
  :user_name => "username",
  :password => "password"
}

Copyright (c) 2008 Eladio Caritos, released under the MIT license