PidNameKeywords Canonical Property
Collapse the table of content
Expand the table of content
Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here. ArchiveDisclaimer

PidNameKeywords Canonical Property

This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This page may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist.

Contains keywords or categories for the message object.

Friendly names:


Property set:


Property name:


Data type:



General messaging

A multi-string value that specifies the categories for a message object, the length of each string within this property multi-value string, must be less than 256.

Protocol Specifications


Provides property set definitions and references to related Exchange Server protocol specifications.


Handles message and attachment objects.


Specifies the properties and operations that are permissible on documents.

Header Files


Provides data type definitions.

© 2015 Microsoft