Which module in cyrus provides return receipt ?

[Theodore J. Knab]

Problem: Management wants a return receipt feature for emails.

Question: 
        I was wondering which module in Cyrus provides return receipt ?
                I was thinking that the ISMP might.
        
        Also, does anyone know if this (IMAP/ ISMP) feature would work with either
                        Mulberry or Eudora ?

-- 
 *Theodore Knab                 *