Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize
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.

PidTagTnefUnprocessedProps 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This content is outdated and is no longer being maintained.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.

Serializes properties when filtering Transport Neutral Encapsulation Format (TNEF).

Associated properties:




Data type:



MAPI non-transmittable

Used by Microsoft Outlook 2007 and Outlook Web Application (OWA) for saving the original TNEF in cases where the TNEF contains named properties that cannot be created in the store.

Header Files


Provides data type definitions.


Contains definitions of properties listed as alternate names.

© 2015 Microsoft