PidTagDeferredSendNumber Canonical Property

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Contains a number that can be used to compute the deferment of sending a message.

Associated properties:




Data type:



MAPI status


This property is used for computing the PR_DEFERRED_SEND_TIME (PidTagDeferredSendTime) property when it is not present. When sending a message is deferred, the PR_DEFERRED_SEND_NUMBER property should be set along with the PR_DEFERRED_SEND_UNITS (PidTagDeferredSendUnits) property, if the PR_DEFERRED_SEND_TIME property is absent.

The PR_DEFERRED_SEND_NUMBER value must be set between 0 and 999.

Protocol Specifications

    Specifies the properties and operations that are permissible for e-mail message objects.

Header Files

  • Mapidefs.h
    Provides data type definitions.

  • Mapitags.h
    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