[rfc-dist] RFC 4551 on IMAP Extension for Conditional STORE Operation or Quick Flag Changes Resynchronization

rfc-editor@rfc-editor.org rfc-editor at rfc-editor.org
Thu Jun 15 17:41:58 PDT 2006

A new Request for Comments is now available in online RFC libraries.

        RFC 4551

        Title:      IMAP Extension for Conditional STORE 
                    Operation or Quick Flag Changes Resynchronization 
        Author:     A. Melnikov, S. Hole
        Status:     Standards Track
        Date:       June 2006
        Mailbox:    Alexey.Melnikov at isode.com, 
                    Steve.Hole at messagingdirect.com
        Pages:      25
        Characters: 50265
        Updates:    RFC3501

        I-D Tag:    draft-ietf-imapext-condstore-09.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4551.txt

Often, multiple IMAP (RFC 3501) clients need to coordinate changes to
a common IMAP mailbox.  Examples include different clients working on
behalf of the same user, and multiple users accessing shared mailboxes.
These clients need a mechanism to synchronize state changes for messages
within the mailbox.  They must be able to guarantee that only one client
can change message state (e.g., message flags) at any time.  An
example of such an application is use of an IMAP mailbox as a message
queue with multiple dequeueing clients.

The Conditional Store facility provides a protected update mechanism for
message state information that can detect and resolve conflicts between
multiple writing mail clients.

The Conditional Store facility also allows a client to quickly
resynchronize mailbox flag changes.

This document defines an extension to IMAP (RFC 3501).  [STANDARDS TRACK]

This document is a product of the Internet Message Access Protocol 
Extension 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 

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Joyce K. Reynolds and Sandy Ginoza
USC/Information Sciences Institute


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