Django File and Locmem Email Backend

testing_backend.py

import django
from django.core import mail
from django.core.mail.backends.filebased import EmailBackend as FileEmailBackend


class EmailBackend(FileEmailBackend):
    def __init__(self, *args, **kwargs):
        super(EmailBackend, self).__init__(*args, **kwargs)
        if not hasattr(mail, 'outbox'):
            mail.outbox = []

    def write_message(self, message):
        if django.VERSION[:2] > (1, 5):
            super(EmailBackend, self).write_message(message)
            mail.outbox.append(message)

    def send_messages(self, messages):
        ret = super(EmailBackend, self).send_messages(messages)
        if django.VERSION[:2] < (1, 6):
            mail.outbox.extend(messages)
        return ret