If you are looking for an open source alternative between Google
Groups and Mailman, I wanted to share:
It has recent release and new design.
Key is the assumption that any user can publish/reply via email or the
web, not just receive email alerts for posting via the web.
Our non-profit is a big user and just released our mobile responsive
design - http://forums.e-democracy.org We are looking to collaborate
with other orgs and developers. Note: