How to use EmailMultiAlternatives with post_office.mail

[pupattan]

In README you have given example of using inline image with EmailMultiAlternatives. But how to use post_office.mail functionality with inline image ?

[selwin]

I agree that currently support for inlined image is a bit fiddly.

Any chance we can improve the feature (or docs) so that it can be used via mail.send() @jrief ?

[jrief]

The reason it "is a bit fiddy" is because of the way Django handles templates and Python handles EmailMultiAlternatives. What I can offer is a utility which wraps the example code into one function.

Shall I add that to the project?

[selwin]

Can't we port this portion of the code and put it in prepare_email_message() here? https://github.com/ui/django-post_office/blob/master/post_office/models.py#L96

[brettbeeson]

I'm trying to EmailMultiAlternatives too. I have successfully used the documented:

mail.send(
    ['recipient@example.com'],
    'from@example.com',
    template='morning_greeting',
    context={'name': 'alice'},
)

but need inline images. Hence I use this snippet and configure as per the docs:

from django.core.mail import EmailMultiAlternatives

subject, body = "Hello", "Plain text body"
from_email, to_email = "no-reply@example.com", "john@example.com"
email_message = EmailMultiAlternatives(subject, body, from_email, [to_email])
template = get_template('email-template-name.html', using='post_office')
context = {...}
html = template.render(context)
email_message.attach_alternative(html, 'text/html')
template.attach_related(email_message)
email_message.send()

The final email_message.send() returns nothing and silently fails to send. I have tried

• Setting settings.EMAIL_BACKEND = 'post_office.EmailBackend' explicitly to no result.
• Setting settings.EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend which correctly sends the email
• Increasing logging of post_office via LOGGING and POST_OFFICE settings to no resuilt.

The email send, templating and inlining work ok with the django.core.mail.backends.smtp.EmailBackend.

Am I missing something? It seems post_office never even tries to send the email. Perhaps I need to instruct post_office to send the email or is email_message.send() expected to do this?

Thanks!

[brettbeeson]

Me again. In exciting news, I've run a debugger and found the problem. The default send priority of DPO is 'medium'. So my mail never got sent in testing. Configuring like this sends the mail

POST_OFFICE = {
   # ...
    'DEFAULT_PRIORITY' : 'now'
}

Sets the get_default_priority to now and sends as expected. See #381 for suggestion to set priority via code and/or update docs. See #380 for why priority defaults to medium.