send_mail user-defined headers

work also with additional headers if there is any..

I'm using django with this, 'mail-additional_headers.diff' patch to be able to pass additional headers to the mails.

import django.core.mail as mailer

(...)

hdict = {"Reply-To": reply_to_addr, 'List-ID': list_id}
mailer.send_mail(sbj, msg, from, recipient_list, additional_headers_dict=hdict)

I know that this is a very dirty way to do this but at least it works for me and not breaks anything. Also IMHO, mail.py should be redesigned from scratch.

I just wanted to share, Thanks.

A low priority change (after all, you have access to all of Python's mail infrastructure if you want it), but may be worth adding. I'm probably about +0.5 on this.

The patch needs improvement, though. There must be a less messy way to write the change at line 88.

less messy..

backwards compatibility and documentation

Would there be any interest in renaming additional_headers_dict to something shorter? It's a little verbose. Perhaps something like extra_headers?

(In [5550]) Fixed #3985 -- Added support for custom email headers.