RFC 9586

IMAP Extension for Using and Returning Unique Identifiers (UIDs) Only, May 2024

File formats:

icon for HTML icon for text file icon for v3pdf icon for XML
Also available: XML file for editing
A. Melnikov
A. P. Achuthan
V. Nagulakonda
A. Singh
L. Alves
extra (art)

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC9586

Discuss this RFC: Send questions or comments to the mailing list extra@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 9586


The UIDONLY extension to the Internet Message Access Protocol (RFCs 3501 and 9051) allows clients to enable a mode in which information about mailbox changes is returned using only Unique Identifiers (UIDs). Message numbers are not returned in responses and cannot be used in requests once this extension is enabled. This helps both clients and servers to reduce resource usage required to maintain a map between message numbers and UIDs.

This document defines an experimental IMAP extension.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

Advanced Search