Multipurpose Internet Mail Extensions (MIME) The MIME utility is a standalone, user-mode, nonprivileged utility that provides MIME interpretation and composition editing. Messages in the VMSMAIL MAIL files can be extracted into text files and then be read and interpreted using MIME. MIME formatted text files can be composed using MIME, and then sent using VMSMAIL to OpenVMS and other systems that have a MIME utility or MIME capable MAIL application.