Hi, Tanguy Le Carrour skribis: > * gnu/home/services/mail.scm: New file. > * gnu/local.mk (GNU_SYSTEM_MODULES): Add it. > * doc/guix.texi (Mailing): New node. Sorry for the delay! I applied it with the changes below. The ‘define-maybe’ change fixes the unbound-variable warnings that we were seeing, and it lets us remove a bit of boilerplate. In a subsequent patch, we should make the msmtp package configurable, as is done for other services (see redshift, unclutter, dbus, etc.). I was going to do it but ran out of time; could you take a look? Thanks! Ludo’.