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Interoperable Email Addresses for SMTPUTF8
draft-ietf-mailmaint-interoperable-addresses-03

Document Type Expired Internet-Draft (mailmaint WG)
Expired & archived
Authors Arnt Gulbrandsen , Jiankang Yao
Last updated 2026-09-03 (Latest revision 2026-03-02)
Replaces draft-gulbrandsen-smtputf8-nice-addresses
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status Proposed Standard
Formats
Additional resources Mailing list discussion
Stream WG state WG Document
Associated WG milestone
Jul 2026
Submit SMTPUTF8 addresses drafts
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Yes
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:

Abstract

This document specifies rules for email addresses that are flexible enough to express the addresses typically used with SMTPUTF8, while avoiding elements that harm human-to-human interoperation. This is one of a pair of documents: this contains recommendations for what addresses humans should use, such that address provisioning systems can restrain themselves to addresses that email valdidators accept. (This set can also be described in other ways, including "simple to cut-and-paste" and "understandable by some community".) Its companion defines simpler rules, accepts more addresses, and is intended for software like MTAs.

Authors

Arnt Gulbrandsen
Jiankang Yao

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)