Emails, a different 'reply to' address than sender address

Reply-To is a standard SMTP header.

I can't find a good reference for it at the moment, but it is mentioned in the Wikipedia article on Email.

Edit: Found it: RFC 5322, section 3.6.2

There are in fact standardized headers to specify response headers: http://cr.yp.to/immhf/response.html.

As far as implementing this in Django is concerned, the documentation contains an example:

from django.core.mail import EmailMessage

email = EmailMessage(
    'Hello', # email subject
    'Body goes here', # email body
    '[email protected]', # sender address
    ['[email protected]', '[email protected]'],
    ['[email protected]'],
    headers={'Reply-To': '[email protected]'},
)

This solved my problem.

The RFC says you can specify multiple emails and that is what I was looking for. Came up with this:

from django.core.mail import EmailMessage
headers = {'Reply-To': '[email protected];[email protected]'}
msg = EmailMessage(subject, html_content, EMAIL_HOST_USER, email_list, headers=headers)
msg.content_subtype = "html"
msg.send()

Works like a charm. Note: EMAIL_HOST_USER is imported from your settings file as per Django doc email setup. More on this here, search for 'reply-to': https://docs.djangoproject.com/en/dev/topics/email/