Players of the mud are allowed to mail each other and wizards via mud mail,
as long as they have reached level 5.  You will get a message upon login 
if you have new mail to be read.

Syntax: mail [,,,...]   to mail player(s) listed
        mail            to start the mailer to read your mail

To get more help, type 'mail' to start the mailer, followed by '?'.

See 'help set' to see how to get notified whenever someone sends you mail
while you're logged in.