From: Mail System Internal Data <MAILER-DAEMON@cs.duke.edu>
  To  : 
  Date: Thu, 8 Apr 1999 17:09:06 -0400 (EDT)

DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA

This text is part of the internal format of your mail folder, and is not
a real message.  It is created automatically by the mail system software.
If deleted, important folder data will be lost, and it will be re-created
with the data reset to initial values.