Source : Free On-Line Dictionary of Computing

Application Configuration Access Protocol
     
         (ACAP) A {protocol} which enhances {IMAP} by
        allowing the user to set up {address books}, user options, and
        other data for universal access.  Currently (Feb 1997) no
        Internet proprietary products have implemented ACAP because
        the {Internet Engineering Task Force} has not yet approved the
        final specification.  This was expected early in 1997.
     
        ["Your E-Mail Is Obsolete", Byte, Feb 1997].
     
        (1997-05-03)