A new Request for Comments is now available in online RFC libraries.
RFC 6532
Title: Internationalized Email Headers
Author: A. Yang, S. Steele,
N. Freed
Status: Standards Track
Stream: IETF
Date: February 2012
Mailbox: abelyang@twnic.net.tw,
Shawn.Steele@microsoft.com,
ned+ietf@mrochek.com
Pages: 11
Characters: 22725
Obsoletes: RFC5335
Updates: RFC2045
I-D Tag: draft-ietf-eai-rfc5335bis-13.txt
URL: http://www.rfc-editor.org/rfc/rfc6532.txt
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 construct so other character sets could be
used in certain header field values. However, full
internationalization of electronic mail requires additional
enhancements to allow the use of Unicode, including characters
outside the ASCII repertoire, in mail addresses as well as direct use
of Unicode in header fields like "From:", "To:", and "Subject:",
without requiring the use of complex encoded-word constructs. This
document specifies an enhancement to the Internet Message Format and
to MIME that allows use of Unicode in mail addresses and most header
field content.
This specification updates Section 6.4 of RFC 2045 to eliminate the
restriction prohibiting the use of non-identity content-transfer-
encodings on subtypes of "message/". [STANDARDS-TRACK]
This document is a product of the Email Address Internationalization Working Group of the IETF.
This is now a Proposed Standard Protocol.
STANDARDS TRACK: This document specifies an Internet standards track
protocol for the Internet community,and requests discussion and suggestions
for improvements. Please refer to the current edition of the Internet
Official Protocol Standards (STD 1) for the standardization state and
status of this protocol. Distribution of this memo is unlimited.
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