rails/rails — pull request #8477 by senny (2012-12-10 15:08:07+00:00)
Title: Backport #8450, the return value from mailer methods is not relevant.

This is a backport of #8450 and it resolves the issue described in #8448

Conflicts:

actionmailer/CHANGELOG.md
actionmailer/lib/action_mailer/base.rb