This bug is part of the non-responsive maintainer procedure for abompard, following https://docs.fedoraproject.org/en-US/fesco/Policy_for_nonresponsive_package_maintainers/. Please respond if you are still active in Fedora and want to maintain mailman3.
Thanks for the heads up, I'm still there but have been swamped by other work and then went offline for a couple weeks.
I'll try and fix bug #1715598 as soon as I can, hopefully this week.
Sorry for the delay.
Hey Aurelien. Thanks. Let continue there.