IMAP "$Important" Keyword and "\Important" Special-Use Attribute
RFC 8457, “IMAP "$Important" Keyword and "\Important" Special-Use Attribute”, is a Proposed Standard document published in September 2018 by B. Leiba. The canonical text is published by the RFC Editor.
Abstract
RFC 6154 created an IMAP special-use LIST extension and defined an initial set of attributes. This document defines a new attribute, "\Important", and establishes a new IANA registry for IMAP folder attributes, which include the attributes defined in RFCs 5258, 3501, and 6154. This document also defines a new IMAP keyword, "$Important", and registers it in the registry defined in RFC 5788.
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 8457 is hosted at rfc-editor.org. Available in TXT,HTML.
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