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PidTagOriginalSubject Canonical Property
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PidTagOriginalSubject 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This content is outdated and is no longer being maintained.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 the subject of an original message for use in a report about the message.

Associated properties:




Data type:



General messaging

These properties are originally set to the same value as the PR_SUBJECT (PidTagSubject) property.

The subject properties are typically small strings of fewer than 256 characters, and a message store provider is not obligated to support the Object Linking and Embedding (OLE) IStream interface on them. The client should always attempt access through the IMAPIProp interface first, and resort to IStream only if MAPI_E_NOT_ENOUGH_MEMORY is returned.

Protocol Specifications


Provides references to related Exchange Server protocol specifications.


Handles synchronizing messaging object data between a server and a client.


Specifies the properties and operations that are permissible on e-mail message objects.

Header Files


Provides data type definitions.


Contains definitions of properties listed as alternate names.

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