Copy returns null if the copy operation is across two mailboxes or between a mailbox and a public folder.
public Task<Item> Copy(
WellKnownFolderName destinationFolderName
)Public Function Copy (
destinationFolderName As WellKnownFolderName
) As Task(Of Item)public:
Task<Item^>^ Copy(
WellKnownFolderName destinationFolderName
)member Copy :
destinationFolderName : WellKnownFolderName -> Task<Item>