[hkhanna]

I've spent a lot of time looking into this for non-profits I am involved in. Currently, I use Mailgun's Mailing List feature which is pretty good, but has a few warts and doesn't really seem to be in active development.

But I have half a mind to develop a Django-based system specifically for non-profit member management, build a postgres view on top of the Django tables and and have a postfix mail server reference that postgres view for mailing list delivery. I would use Mailgun or another SMTP relay to minimize deliverability issues.