VMS Help MAIL Routines, MAIL$MESSAGE_COPY, Output Item Codes  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 MAIL$_MESSAGE_FILE_CREATED

    When you specify the Boolean item code MAIL$_MESSAGE_FILE_
    CREATED, MAIL$MESSAGE_COPY returns the value of the file created
    flag as longword value.

 MAIL$_MESSAGE_FOLDER_CREATED

    When you specify the Boolean item code MAIL$_MESSAGE_FOLDER_
    CREATED, MAIL$MESSAGE_COPY returns the value of the folder
    created flag as a longword value.

 MAIL$_MESSAGE_RESULTSPEC

    When you specify MAIL$_MESSAGE_RESULTSPEC, MAIL$MESSAGE_COPY
    returns the mail file resultant file specification. The buffer
    address field of the item descriptor points to a buffer that
    receives a character string 0 to 255 characters long.

    Specify a value from 0 to 255 in the buffer length field of the
    item descriptor.