ARGUMENTS: [-n or username(s)]

The "mail" system allows you to send email to other users, or groups of users,
on the game, or read mail that has been sent to you by others.  If you specify
usernames as an argument to the mail command, you will be automatically placed
in sending-mail mode, with the mail addressed to those users.  Otherwise,
you'll be placed at the main mail command prompt.  Use the "?" command from the
prompt in order to get a help screen about the various commands and features.

If used with "-n" as an argument, the "mail" command checks for any new mail,
reports if any was found, and then exits.