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

    The MIME utility does not fully integrate with the VMSMAIL
    user interface to send MIME messages over the internet. You can
    use VMSMAIL to send MIME messages created and saved with the MIME
    utility. Those messages can then be interpreted using MIME at the
    destination OpenVMS host or with a MIME capable reader on another
    system platform.

    However, MIME messages sent with Compaq TCP/IP Services for OpenVMS
    may not be interpreted by MIME programs other than the OpenVMS MIME
    Utility. That is unless the version of TCP/IP Services for OpenVMS
    is later than V5.0A, or the latest TCP/IP updates have been applied.

    As of TCP/IP Services for OpenVMS version V5.0A, a known problem
    exists where an extra NEWLINE character corrupts the MIME message
    sent with SMTP. This will be corrected in the next release of
    TCP/IP Services for OpenVMS.