Message reformatting

As mentioned in the discussion of the  mapping table, that mapping can also be used to effect the conversion of attachments between MIME and several  proprietary mail formats.

Examples of some of the other sorts of message reformatting which can be affected with the     mapping are described in Non-MIME binary attachment conversion, Relabelling_MIME_header_lines, and MacMIME format conversions.

See also:
 * Non-MIME binary attachment conversion
 * Relabelling MIME header lines
 * MacMIME format conversions
 * CHARSET-CONVERSION mapping table