Using Mad Mimi on rails 3, rails 2 and from commandline. All of the elegant portions of the code are based on the original http://github.com/redsquirrel/mad_mimi_mailer by ethangunderson. All of the terrible stuff is by me. Apologies for taking an elegant solution and just crafting something that works.
Gemfile gem 'mad_mimi_two', '~> 0.7.1'
install gem install mad_mimi_two