The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

PidTagOriginalSenderEntryId 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This content is outdated and is no longer being maintained.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 entry identifier of the sender of the first version of a message, that is, the message before being forwarded or replied to.

Associated properties:




Data type:



General messaging

This property is one of the address properties for the original sender of a message. At first submission of the message, a client application should set this property to the value of the PR_SENDER_ENTRYID (PidTagSenderEntryId) property. It is never changed when the message is forwarded or replied to.

Protocol Specifications


Provides references to related Exchange Server protocol specifications.


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.

© 2015 Microsoft