PidLidToDoTitle Canonical Property

Applies to: Outlook 2013 | Outlook 2016

Contains user-specifiable text to identify this message object in a consolidated to-do list.

Associated properties:
Property set:
Long ID (LID):
Data type:


This property must not be set on a task. To indicate an empty property, do not set this property to the zero-length string, but instead delete it.

When flagging a message object, and the property does not exist, a client should write the value of PR_NORMALIZED_SUBJECT (PidTagNormalizedSubject) to this property.

In a consolidated to-do list, if this property does not exist, a client should substitute the value of the PR_NORMALIZED_SUBJECT property when displaying this property in the to-do list.

On a draft message object, if the client implements sender flags, this property should be set to the same value as dispidRequest (PidLidFlagRequest).

Protocol specifications


Provides property set definitions and references to related Exchange Server protocol specifications


Specifies the properties and operations related to flagging.

Header files


Provides data type definitions.

See also

PidTagNormalizedSubject Canonical Property

PidLidFlagRequest Canonical Property

MAPI Properties

MAPI Canonical Properties

Mapping Canonical Property Names to MAPI Names

Mapping MAPI Names to Canonical Property Names