RFC 7889 · PROPOSED STANDARD · 2016
WED · 29 JUL 2026
The IMAP APPENDLIMIT Extension
Overview
RFC 7889, “The IMAP APPENDLIMIT Extension”, is a Proposed Standard document published in May 2016 by J. SrimushnamBoovaraghamoorthy, N. Bisht. The canonical text is published by the RFC Editor.
Abstract
This document defines an extension to the IMAP service whereby a server can inform the client about maximum message upload sizes, allowing the client to avoid sending APPEND commands that will fail because the messages are too large.
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 7889 is hosted at rfc-editor.org. Available in TXT,HTML.
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