VMS Help MAIL Routines, MAIL$MESSAGE_INFO, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    MAIL$MESSAGE_INFO obtains information about a particular message.
    MAIL$MESSAGE_GET retrieves a message from the set of currently
    selected messages.

    The first call to MAIL$MESSAGE_GET passes control to
    MAIL$MESSAGE_INFO. Subsequent calls that include the MAIL$_
    MESSAGE_CONTINUE item code return text records.