Occurs before an Outlook item is unloaded from memory, either programmatically or by user action.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
This event occurs after the Close event for the Outlook item occurs, but before the Outlook item is unloaded from memory, allowing an add-in to release any resources related to the object. Although the event occurs before the Outlook item is unloaded from memory, this event cannot be canceled.
This event is meant only as a notification event, so that an add-in can dereference the object. An error occurs if any property or method for this object is called within the Unload event.