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Status:

PROPOSED STANDARD

Obsoletes:

RFC 4551,RFC 5162

Updates:

RFC 2683

Authors:

A. Melnikov
D. Cridland

Stream:

IETF

Source:

qresync (app)

Cite this RFC:TXT  | XML  |  BibTeX

DOI:  https://doi.org/10.17487/RFC7162

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Other actions:View Errata  | Submit Errata  | Find IPR Disclosures from the IETF  | View History of RFC 7162

Abstract

Often, multiple IMAP (RFC 3501) clients need to coordinate changes toa common IMAP mailbox. Examples include different clients working onbehalf of the same user and multiple users accessing sharedmailboxes. These clients need a mechanism to efficiently synchronizestate changes for messages within the mailbox.

Initially defined in RFC 4551, the Conditional Store facilityprovides a protected update mechanism for message state informationand a mechanism for requesting only changes to the message state.This memo updates that mechanism and obsoletes RFC 4551, based onoperational experience.

This document additionally updates another IMAP extension, QuickResynchronization, which builds on the Conditional STORE extension toprovide an IMAP client the ability to fully resynchronize a mailboxas part of the SELECT/EXAMINE command, without the need foradditional server-side state or client round trips. Hence, this memoobsoletes RFC 5162.

Finally, this document also updates the line-length recommendation inSection 3.2.1.5 of RFC 2683.

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.