The IMAP METADATA Extension
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com> Subject: Protocol Action: 'IMAP METADATA Extension' to Proposed Standard The IESG has approved the following document: - 'IMAP METADATA Extension ' <draft-daboo-imap-annotatemore-18.txt> as a Proposed Standard This document has been reviewed in the IETF but is not the product of an IETF Working Group. The IESG contact person is Chris Newman. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-daboo-imap-annotatemore-18.txt
Technical Summary The METADATA extension to the Internet Message Access Protocol permits clients and servers to maintain "annotations" or "meta data" on IMAP servers. It is possible to have annotations on a per-mailbox basis or on the server as a whole. For example, this would allow comments about the purpose of a particular mailbox to be "attached" to that mailbox, or a "message of the day" containing server status information to be made available to anyone logging in to the server. Working Group Summary This document is an individual submission. It was informally last called in the IMAPEXT WG and was discussed in several WG meetings. It was also reviewed by lemonade WG participants for interaction with other IMAP extensions. Protocol Quality This was reviewed for the IESG by Chris Newman. This proposal has been discussed extensively and is leveraged by upcoming extensions from the lemonade WG. There was a proposal to add multi-valued attributes, but it was not accepted due to existence of a work-around using subordinate entries. This area might need further feedback from client implementors. There have been ongoing requests for this functionality for many years, but also ongoing concerns about the level of complexity in this proposal. There are already 2 server implementations of earlier versions of this document. At least one client and one server vendor are interested in implementing the specification. Francis Dupont performed GEN-ART review. After the first last call for this document, an effort was made to greatly simplify this proposal resulting in a second last call.