Represents a custom property of an Outlook item.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
Use UserProperties(index), where index is a name or index number, to return a single UserProperty object.
When you create a custom property, a field is added in the folder that contains the item (using the same name as the property). That field can be used as a column in folder views.