The CopyTo method makes a copy of the Message object in another folder.
Set objCopiedMessage = objMessage.CopyTo(folderID [, storeID] )
The current version of CDO does not support the CopyTo method on AppointmentItem objects.
All properties that have been set on this message are copied, whether they have read-only or read/write access. Each property is copied with its value and access unchanged.
The copy operation takes effect when you call the Update method on the copied Message object. This allows you to change, for example, the Sent property on the message copy before committing the transaction.
This Message object remains unchanged by the CopyTo method.