Syntax:  .set email <address>
          .set email [-c|clear]

Results:  This setting allows you to set you email address shown (or
          hidden, depending on your .set visemail setting) in .ustat,
          and use it for forwarding and auto-forwarding talker mail to it
          in conjunction with .autofwd and/or .fmail
          <address> must contain at least one @ and . character
          The -c or clear option will set your address back to the
          unspecified default

See also: set_visemail, set_autofwd, fmail