remove

REMOVE  -  remove an address from the outgoing message

Usage:  REMOVE address

The REMOVE command removes one or more addresses from TO, CC and BCC
  fields of the outgoing message.  You do not specify which field, just
  the address.  You can generally omit the "@host" portion, that is, 
  "remove rcl" would remove "rcl@cunixf".

Example:
    Send>display to
      To: walter, sue, brennan
    Send>remove sue			
    Send>display to
      To: walter, brennan

For more help, type "help" and one of these topics:
  display   to   cc   bcc   erase   header-field