JMAP Object Metadata

This document defines a new extension to the JSON Meta Application Protocol (JMAP) that introduces a standardized mechanism for managing metadata associated with JMAP objects. The JMAP Object Metadata extension allows clients and servers to store, retrieve, and synchronize arbitrary metadata and annotations on any JMAP data type in a consistent manner. It defines a generic annotation model as well as specific mappings for accessing IMAP metadata and WebDAV “dead properties” where applicable. This extension facilitates interoperability between JMAP and existing metadata frameworks while allowing vendor-specific extensions in a structured and discoverable way.