PidTagJunkIncludeContacts Canonical Property

Applies to: Outlook 2013 | Outlook 2016

Indicates whether email addresses of the contacts in the Contacts folder are treated specially with respect to the spam filter.

Associated properties:
Data type:


If set to "0x00000001", these email addresses must populate the "trusted" contact email address portion of the Junk E-Mail Rule Restriction such that mail from these addresses is treated as "not junk". If set to "0x00000000", email addresses from the Contacts folder must not be added to the Junk E-Mail Rule, and the section of the rule must be NULL.

If this property is present with a value of "0x00000001" and if the added contact has email addresses that are not yet included in the trusted contacts section of the Junk E-Mail Rule, those email addresses must be added to the restriction. If this property is "0x00000000", no action is required.

Protocol specifications


Provides references to related Exchange Server protocol specifications.


Enables the handling of allow/block lists and the determination of junk email messages.

Header files


Provides data type definitions.


Contains definitions of properties listed as alternate names.

See also

MAPI Properties

MAPI Canonical Properties

Mapping Canonical Property Names to MAPI Names

Mapping MAPI Names to Canonical Property Names