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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.

PidTagOriginalAuthorAddressType Canonical Property

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Contains the address type of the author of the first version of a message, that is, the message before being forwarded or replied to.

Associated properties:




Data type:




These properties are examples of the address properties for the author of a message. At first submission of the message, the client application should set this property to the value of the PR_SENDER_ADDRTYPE (PidTagSenderAddressType) property. It is never changed when the message is forwarded or replied to.

The original author properties allow for preservation of information from outside the local messaging domain. When a message arrives from another messaging domain, such as from the Internet, these properties provide a way to ensure that original information is not lost.

Header Files


Provides data type definitions.


Contains definitions of properties listed as associated properties.

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