The SHOW command shows settings for one or more user profiles,
    displays established forwarding addresses, and lists information
    about messages received by users. The username parameter can
    contain wild cards when displaying account information; it can
    not contain wild cards when listing forwardings.

    Use the SHOW/FORWARDINGS and SHOW/DOMAINS commands to generate
    listings of, respectively, user e-mail forwardings and user
    domains.

    Use the SHOW/COUNT_USERS command to list the number of currently
    defined accounts as well as any licensing limits.