MIME entity headers
01MIME headers describe the body entity without replacing SMTP envelope routing.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 3 ↗
RFC 2045 · § 3EXAMPLE
3 / 3
03
Deliver the body
Envelope routing remains separate from these body descriptions.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
Earlier MIME descriptionsRFC 2045 §6.6
This revision points to RFC 2049’s explicit canonical encoding model to clarify newline handling and the distinction between charsets and transfer encodings.
Read the updated RFC section ↗MIME-Version: 1.0 identifies this MIME format.
- MIME-Version: 1.0 identifies this MIME format.
- Content-Type describes the media type and parameters.
- Content-Transfer-Encoding describes how body bytes were encoded for transport.
Examples are illustrative. Consult the linked RFC and its errata for implementation details.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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