Hi Reps,
in 2017 I started to work on this task for the Council but seems that after only 2 years it is possible to migrate the mailing list to Discourse.
There is an old ticket https://github.com/mozilla/Reps/issues/272 that reference to a ticket from https://github.com/mozilla/discourse/issues/28#issuecomment-537888975
@leo mplemented the auto watch of a category by group in Discourse (for the community portal), and with the support of automatically create a group from mozillians already available this let to remove the mailing list.
So let’s discuss about this task and how we can involve better Reps to join Discourse!