Add devel/py-marrow.mailer: Python library to ease sending emails

Marrow Mailer is a Python library to ease sending emails from your application.

By using Marrow Mailer you can:

• Easily construct plain text and HTML emails.
• Improve the testability of your e-mail deliveries.
• Use different mail delivery management strategies; e.g. immediate, deferred, or even multi-server.
• Deliver e-mail through a number of alternative transports including SMTP, Amazon SES, sendmail, or even via direct on-disk mbox/maildir.
• Multiple simultaneous configurations for more targeted delivery.

WWW: https://github.com/marrow/mailer