The IMAP METADATA Extension
RFC 5464, “The IMAP METADATA Extension”, is a Proposed Standard document published in February 2009 by C. Daboo. The canonical text is published by the RFC Editor.
Abstract
The METADATA extension to the Internet Message Access Protocol permits clients and servers to maintain "annotations" or "metadata" 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. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5464 is hosted at rfc-editor.org. Available in TXT,HTML.
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