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PidTagItemTemporaryflags Canonical Property

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Contains a flag that indicates that a message has been read, but not marked as read.

Associated properties:




Data type:



General messaging

This property is used in Outlook's Unread Messages search folder to keep track of which messages have been read without actually marking them as read, which would remove them from the folder. When the view changes this property is removed and the item is marked as read. This property will not synchronize to the Exchange Server.

Protocol Specifications


Provides references to related Exchange Server protocol specifications.


Handles folder operations.

Header Files


Provides data type definitions.


Contains definitions of properties listed as alternate names.