PidTagTnefUnprocessedProps Canonical Property
Applies to: Outlook 2013 | Outlook 2016
Serializes properties when filtering Transport Neutral Encapsulation Format (TNEF).
Used by Microsoft Outlook and Outlook Web Access (OWA) for saving the original TNEF in cases where the TNEF contains named properties that cannot be created in the store.
Provides data type definitions.
Contains definitions of properties listed as alternate names.