django-orchestra/orchestra/contrib/mailer/backends.py

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from django.conf import settings as djsettings
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from django.core.mail.backends.base import BaseEmailBackend
from .models import Message
from .tasks import send_message
class EmailBackend(BaseEmailBackend):
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"""
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A wrapper that manages a queued SMTP system.
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"""
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def send_messages(self, email_messages):
if not email_messages:
return
num_sent = 0
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is_bulk = len(email_messages) > 1
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for message in email_messages:
priority = message.extra_headers.get('X-Mail-Priority', Message.NORMAL)
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content = message.message().as_string()
for to_email in message.recipients():
message = Message.objects.create(
priority=priority,
to_address=to_email,
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from_address=getattr(message, 'from_email', djsettings.DEFAULT_FROM_EMAIL),
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subject=message.subject,
content=content,
)
if not is_bulk or priority == Message.CRITICAL:
# send immidiately
send_message.apply_async(message)
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num_sent += 1
return num_sent