rfc-2045
Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies
This initial document specifies the various headers used to describe the structure of MIME messages. [STANDARDS-TRACK]
obsoletes
- rfc-1521 — MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies
- rfc-1522 — MIME (Multipurpose Internet Mail Extensions) Part Two: Message Header Extensions for Non-ASCII Text
- rfc-1590 — Media Type Registration Procedure