status

STATUS  -  display information about your MM process

Usage:  STATUS [VERBOSE]

The STATUS command will display information and statistics about your
  MM process and current mail file.  Adding "verbose" displays a few
  additional lines of information.

Example:
    MM>status	
     File /f/u1/abc1/mbox (mbox)
     26 messages, 26 old, 3 deleted, 0 unseen, 37k bytes
     Currently at message 26
  Meaning: The current mail file is /f/u1/abc1/mbox (the mbox file of the
  userid "abc1"), and its format is mbox (the usual format).  The next
  line comments on the messages: "old" means in the file before this session; 
  37k bytes (about 37,000 characters) is the size of the whole file mbox.  
  The last line shows what message is "current" (message-sequence "current", 
  used by various commands).

For more help type "help" and one of these topics:
  message-sequence   information