Media Type name: multipart Media subtype name: multilingual Required parameters: boundary (defined in RFC 2046) Optional parameters: N/A Encoding considerations: There are no encoding considerations for this multipart other than that of the embedded body parts. The embedded body parts (typically one 'text/plain' plus one or more 'message/*') may contain 7-bit, 8-bit, or binary encodings. Security considerations: See the Security Considerations section in RFC 8255 Interoperability considerations: Existing systems that do not treat unknown multipart subtypes as 'multipart/mixed' may not correctly render a 'multipart/multilingual' type. These systems would also be non- compliant with MIME. Published specification: RFC 8255 Applications that use this media type: Mail Transfer Agents, Mail User Agents, spam detection, virus detection modules, and message authentication modules. Fragment identifier considerations: N/A Additional information: Deprecated alias names for this type: N/A Magic number(s): N/A File extension(s): N/A Macintosh file type code(s): N/A Person & email address to contact for further information: Nik Tomkinson rfc.nik.tomkinson&gmail.com Nathaniel Borenstein nsb&mimecast.com Intended usage: COMMON Restrictions on usage: N/A Author/Change controller: IETF