Is it possible to create civicrm integrated email discussion lists? For example I want the members of a civicrm group to be able to send an email to firstname.lastname@example.org and have it sent to all members of the group. All members of the group should be able to respond to such messages. Email version of google groups, yahoo groups. I did some googling and saw some mentions of Drupal/Civicrm/Organic Groups/Mailman integration but can't tell what is the current best solution. A lot of the pages were very old.
we have deployed this in a couple of situations including making a UI that let's you set the Civi Group, or a Civi Relationship, as the basis for the Mailman group. There is still the issue about what happens when someone unsubs via Mailman, since the Civi synch just puts them back in ;-)
I don't think we were ever able to take it further than a build for that single client ie it didn't not get developed as an extension or even a releasable module. i should check what might be involved in making it able to be shared.