Hi Nils,
mu4e uses the 'Reply-To' header to decide that; mu4e doesn't really
treat lists differently (except cosmetically, in the headers-list /
view).
Anyway, you can open an issue at github with a (sufficiently
anonymized) raw message from this mailing list, and we can see if
there's something that can be done.
Kind regards,
Dirk.
--
Dirk-Jan C. Binnema Helsinki, Finland
e:dj...@djcbsoftware.nl w:
www.djcbsoftware.nl
pgp: D09C E664 897D 7D39 5047 A178 E96A C7A1 017D DA3C