mikel/mail — pull request #400 by dmathieu (2012-05-24 14:41:11+00:00)
Title: check mail params for every delivery method

Currently, when sending an email via SMTP without a sender or recipient, an exception is raised.
This occurs only in SMTP though, when it should happen for every delivery method.

For example, if I don't specify a sender or recipient with the test delivery method, no error will be raised.
But when going to staging/production, there will be.