PostItem.CustomAction event (Outlook)

Occurs when a custom action of an item (which is an instance of the parent object) executes.


expression. CustomAction( _Action_ , _Response_ , _Cancel_ )

expression A variable that represents a PostItem object.


Name Required/Optional Data type Description
Action Required Object The Action object.
Response Required Object The newly created item resulting from the custom action.
Cancel Required Boolean (Not used in VBScript). False when the event occurs. If the event procedure sets this argument to True, the custom action is not completed.


The Action object and the newly created item resulting from the custom action are passed to the event.

In Microsoft Visual Basic Scripting Edition (VBScript), if you set the return value of this function to False, the custom action operation is not completed.

See also

PostItem Object

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