Library /sys$common/syshlp/mailhelp.hlb Overview  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    You can use the OpenVMS Mail utility (MAIL) to send messages
    to other users on your system or on any other computer that
    is connected to your system. You can also read, file, forward,
    delete, print, and reply to messages that other users send to
    you.