RFC 8474 · PROPOSED STANDARD · 2018
SUN · 14 JUN 2026
IMAP Extension for Object Identifiers
Overview
RFC 8474, “IMAP Extension for Object Identifiers”, is a Proposed Standard document published in September 2018 by B. Gondwana. It updates RFC 3501. The canonical text is published by the RFC Editor.
Abstract
This document updates RFC 3501 (IMAP4rev1) with persistent identifiers on mailboxes and messages to allow clients to more efficiently reuse cached data when resources have changed location on the server.
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.
Read this RFC
The canonical text of RFC 8474 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2018
- RFC 8473 Token Binding over HTTP
- RFC 8475 Using Conditional Router Advertisements for Enterprise Multihoming
- RFC 8472 Transport Layer Security Extension for Token Binding Protocol Negotiation
- RFC 8476 Signaling Maximum SID Depth Using OSPF
- RFC 8471 The Token Binding Protocol Version 1.0
- RFC 8477 Report from the Internet of Things Semantic Interoperability Workshop 2016
- RFC 8470 Using Early Data in HTTP
- RFC 8478 Zstandard Compression and the application/zstd Media Type