README.md

Simplest Async Email Backend for Django

What is this?

It is simplest email backend for Django which supports async email delivery in parallel threads. Keep it simple! It has various analogs, you can google for it yourself.

Requirements

Django async email backend requires futures library. So you need to install it with pip install futures.

Django configuration settings

This is simple backend so you need to configure django to use our backend and you can alter pool size with EMAIL_BACKEND_POOL_SIZE.

EMAIL_BACKEND = 'utils.email.EmailBackend'
EMAIL_BACKEND_POOL_SIZE = 15 # default value

email.py

from concurrent import futures
from django.conf import settings
from django.core.mail.backends.smtp import EmailBackend as BaseEmailBackend


class EmailBackend(BaseEmailBackend):
    """
    A wrapper that manages the SMTP network connection asynchronously
    """

    def __init__(self, *args, **kwargs):
        super(EmailBackend, self).__init__(*args, **kwargs)

        self.executor = futures.ThreadPoolExecutor(
                max_workers=int(getattr(settings, 'EMAIL_BACKEND_POOL_SIZE', 15))
        )

    def send_messages(self, email_messages):
        return self.executor.submit(super(EmailBackend, self).send_messages, email_messages)