This document defines an IMAP extension that can be used to replace an existing message in a message store with a new message. Message replacement is a common operation for clients that automatically save drafts or notes as a user composes them.
From RFC Editor, a database of the Internet Engineering Task Force. This record may not reflect the most current and accurate data available from the IETF.
The original record can be accessed at https://www.rfc-editor.org/rfc/rfc8508.txt.