If I log in to my fileserver per SSH, I get the usual MOTD (message of the day) plus a message
saying “You have new mail” (“Sie haben neue Nachrichten”). After some googleing I found out,
that I had to type in the following to see this “mail”:
Very self-explanatory :-P
Then a console mail client appeared on my desk
You can navigate through your in-box by typing the number of a mail.
By the way: On boot, the server overwrites your MOTD. You can customize this behavior by