RDOPostItem object represents an "IPM.Post" message in one of Outlook folders. RDOPostItem is derived from the RDOMail object and as such inherits all the properties, methods and events implemented by the RDOMail object. RDOPostItem object does not introduce new properties or methods. The only difference from the RDOMail object is that a new RDOPostItem object is always created in the sent state.
Everywhere RDOMail object is normally returned (RDOSession.GetMessageFromID, RDOFolder.Items, etc), RDOPostItem will be returned if the message class is "IPM.Post".
The example below creates a new post item in the given folder.