Man pages matching name mbox in section 5:

mbox.5.de	debian 10 / manpages-de
mbox.5.pl	debian 10 / manpages-pl
mbox.5.en	debian 10 / mutt
mbox.5.de	debian 11 / manpages-de
mbox.5.pl	debian 11 / manpages-pl
mbox.5.en	debian 11 / mutt
mbox.5.de	debian 12 / manpages-de
mbox.5.pl	debian 12 / manpages-pl
mbox.5.en	debian 12 / mutt