renz45/mandrill_mailer — pull request #8 by mschulkind (2013-01-14 05:49:28+00:00)
Title: Stop using evil class variables and breaking things.

Class variables in ruby are mostly pure evil. They never do what you expect.

With the old code, defaults and test_setups were shared with ALL mailers, regardless of class. I noticed this when I set a default from_name on one mailer and suddenly it was being used by my other mailer.