RFC 6532: Internationalized Email Headers

Internet mail was originally limited to 7-bit ASCII. MIME added support for the use of 8-bit character sets in body parts, and also defined an encoded-word…

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Outgoing relationships (15 related RFCs)

Updates, Informative reference — RFC 2045: Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies
Obsoletes, Informative reference — RFC 5335: Internationalized Email Headers
Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 5234: Augmented BNF for Syntax Specifications: ABNF
Normative reference — RFC 3629: UTF-8, a transformation format of ISO 10646
Normative reference — RFC 5322: Internet Message Format
Normative reference — RFC 5321: Simple Mail Transfer Protocol
Normative reference — RFC 5198: Unicode Format for Network Interchange
Normative reference — RFC 6530: Overview and Framework for Internationalized Email
Normative reference — RFC 6531: SMTP Extension for Internationalized Email
Informative reference — RFC 5280: Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile
Informative reference — RFC 2046: Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types
Informative reference — RFC 2047: MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII Text
Informative reference — RFC 3156: MIME Security with OpenPGP
Informative reference — RFC 6152: SMTP Service Extension for 8-bit MIME Transport

Incoming relationships (17 related RFCs)

Normatively referenced by — RFC 6838: Media Type Specifications and Registration Procedures
Normatively referenced by — RFC 6530: Overview and Framework for Internationalized Email
Normatively referenced by — RFC 6531: SMTP Extension for Internationalized Email
Normatively referenced by — RFC 6855: IMAP Support for UTF-8
Normatively referenced by — RFC 6533: Internationalized Delivery Status and Disposition Notifications
Normatively referenced by — RFC 6856: Post Office Protocol Version 3 (POP3) Support for UTF-8
Normatively referenced by — RFC 7763: The text/markdown Media Type
Normatively referenced by — RFC 9598: Internationalized Email Addresses in X.509 Certificates
Normatively referenced by — RFC 8255: Multiple Language Content Type
Normatively referenced by — RFC 9477: Complaint Feedback Loop Address Header
Normatively referenced by — RFC 9873: Additional Email Address Extension for the Extensible Provisioning Protocol (EPP)
Informatively referenced by — RFC 6943: Issues in Identifier Comparison for Security Purposes
Informatively referenced by — RFC 9911: Common YANG Data Types
Informatively referenced by — RFC 6778: Requirements for Archiving IETF Email Lists and for Providing Web-Based Browsing and Searching
Informatively referenced by — RFC 9787: Guidance on End-to-End Email Security
Informatively referenced by — RFC 7017: IMAP Access to IETF Email List Archives
Informatively referenced by — RFC 7508: Securing Header Fields with S/MIME