Multipurpose Internet Messaging Extensions (MIME) enable the transport of attachments and non-ASCII text via the Simple Message Transport Protocol (SMTP). They cover most (but not all) of the features of X.400, and interface with X.400 via the MIME-X.400 Enhanced Relay (MIXER) specification.
Multipurpose Internet Messaging Extensions
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Woffice comes with several built-in demos that you can install in one single click. You can test the available demos here and feel free to challenge any presented feature.