Django Post Office is a simple app to send and manage your emails in
Django. Some awesome features are:

* Allows you to send email asynchronously
* Multi backend support
* Supports HTML email
* Supports database based email templates
* Built in scheduling support
* Works well with task queues like RQ or Celery
* Uses multiprocessing to send a large number of emails in parallel
* Supports multilingual email templates (i18n)

WWW: https://github.com/ui/django-post_office