I would like to participate again in the dicussions.
This is currently prevented by a "mailman" bug. The "mailman" process
needs a restart.
The long standing "mailman" bug causes digest delivery to stop. It affects
the complete "mail.zope.org" (all mailing lists together)
about every few months.
A "mailman" restart fixes the problem temporarily.
Maybe a newer "mailman" version has the bug fixed?
Hope someone is able to restart "mailman" on "mail.zope.org".
Zope3-dev mailing list