- updated for Python 3 and the latest P3 compatible Django utilities for
archiving and email list collection, along with any new appropriate features?
That's a great question for the Postorius and HyperKitty folks. Core is Python 3 already (and only), while P and HK should support both on Django. mailmanclient is and will remain bilingual.
Correction: Neither Postorius nor Hyperkitty currently support Python 3. The only thing blocking Postorius is django-mailman3. (I have a mr for the changes needed to the Postorius' code) I'm not sure about the status of hyperkitty.