kennethreitz/flask-heroku — pull request #15 by ferrix (2012-12-13 16:25:03+00:00)
Title: Support SendGrid

This adds support to inferring SendGrid settings from Heroku environment
variables. Since Mailgun was already there, this patch will not override
those settings.

Another thing this patch does is set the variables expected by [Flask-Mail][1].
Both SendGrid and Mailgun support TLS so that is enabled for both.

[1]: http://packages.python.org/Flask-Mail/