You do not have any new mail
Linux users which run Debian and recently upgraded from Debian 12 to 13 (Trixie) might have been greeted by You do not have any new mail on their first log in on a TTY. Well if the user also has a mail server installed I suppose. The message "You do not have any new mail" was at least confusing for me. Until Debian 12 you got You have mail when read mail exist or You have new mail if there are unread mails in /var/mail/$USER , with $USER being the name of the user currently logged it. When I first read the new message "You do not have any new mail" I thought "I have new mail, how come?", because it just directly after the boot completing the system upgrade. I had to read two or three times to "Hum, that is odd". Frankly I have no idea why this message comes, or why somebody deemed it necessary to change the old behaviour. For those not having a local mail system installed, here are some infos which might help to understand its benefits....
