A collection of all properties associated with the item.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
Use the ItemProperties property to return the ItemProperties collection. Use ItemProperties.Item(index), where index is the name of the object or the numeric position of the item within the collection, to return a single ItemProperty object.
The ItemProperties collection is zero-based, meaning that the first item in the collection is referenced by 0.
You can only add or remove custom properties. Custom properties are denoted by the IsUserProperty .