Hello Guix, you might want to import a mailing-list-archive into mu4e. E.g. because debbugs.el is slow, you might want to import the archives of the guix-patches mailing list. This is how to do so.
First, download the archives as in the "mbox" format -- the only format that Mailman offers: --8<---------------cut here---------------start------------->8--- cd ~/some/where for y in {2017..2022}; do for m in {01..12}; do curl --fail "https://lists.gnu.org/archive/mbox/guix-patches/$y-$m" > "$y-$m" || rm "$y-$m"; done; done --8<---------------cut here---------------end--------------->8--- Now, download and run a perl-tool named "mb2md" to convert the mboxes into maildirs: --8<---------------cut here---------------start------------->8--- mkdir tool maildir curl http://batleth.sapienti-sat.org/projects/mb2md/mb2md-3.20.pl.gz \ --output tool/mb2md.pl.gz gzip -d tool/mb2md.pl.gz chmod 755 tool/mb2md.pl guix shell perl perl-datetime perl-timedate for f in $(realpath ./mbox)/*; do perl tool/mb2md.pl -s "$f" -d $(realpath mailbox); done exit --8<---------------cut here---------------end--------------->8--- Next, you might want to mark all mails in that maildir as "read": --8<---------------cut here---------------start------------->8--- guix shell mblaze mlist -s ./mailbox | mflag -S exit --8<---------------cut here---------------end--------------->8--- Finally, move that maildir to its destination: --8<---------------cut here---------------start------------->8--- mv maildir ~/path/to/maildirs/guix-patches --8<---------------cut here---------------end--------------->8--- Enjoy!