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Property Identifier Ranges

Applies to: Office 2010 | Outlook 2010 | Visual Studio

The following table summarizes the different ranges for property identifiers, describing the owner for the properties in each range.

Identifier range

Description

0000

Reserved by MAPI for the special value PR_NULL.

0001 - 0BFF

Message envelope properties defined by MAPI.

0C00 - 0DFF

Recipient properties defined by MAPI.

0E00 - 0FFF

Non-transmittable message properties defined by MAPI.

1000 - 2FFF

Message content properties defined by MAPI.

3000 - 3FFF

Properties for objects other than messages and recipients defined by MAPI.

4000 - 57FF

Message envelope properties defined by transport providers.

5800 - 5FFF

Recipient properties defined by transport and address book providers.

6000 - 65FF

Non-transmittable message properties defined by clients.

6600 - 67FF

Non-transmittable properties defined by a service provider. These properties can be visible or invisible to users.

6800 - 7BFF

Message content properties for custom message classes defined by creators of those classes.

7C00 - 7FFF

Non-transmittable properties for custom message classes defined by creators of those classes.

8000 - FFFE

Properties defined by clients and occasionally service providers that are identified by name through the IMAPIProp::GetNamesFromIDs and IMAPIProp::GetIDsFromNames methods.

FFFF

Reserved by MAPI for the special error value PROP_ID_INVALID.

The range between 3000 and 3FFF is reserved for properties that are not related to either messages or recipients. MAPI divides this range into sub-ranges by types of object; the following table shows this further breakdown.

Identifier range

Type of property

3000 - 33FF

Common properties that appear on multiple objects, such as PR_DISPLAY_NAME and PR_ENTRYID.

3400 - 35FF

Message store properties

3600 - 36FF

Folder and address book container properties

3700 - 38FF

Attachment properties

3900 - 39FF

Address book properties

3A00 - 3BFF

Messaging user properties

3C00 - 3CFF

Distribution list properties

3D00 - 3DFF

Profile properties

3E00 - 3FFF

Status object properties