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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.

PidTagServiceExtraUids 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This content is outdated and is no longer being maintained.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 a list of MAPIUID structures that identify additional profile sections for the message service.

Associated properties:




Data type:



MAPI profile

New profile sections can be created for each message filter. When the information about the message service is to be copied to another profile, it is important to copy the additional profile sections for the filters as well. A service provider that uses additional profile sections can store the MAPIUID structures of those profile sections in PR_SERVICE_EXTRA_UIDS, which allows MAPI to copy the additional message service information.

Header Files


Provides data type definitions.


Contains definitions of properties listed as alternate names.

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