EWS: copy items between mailboxes / accounts

Question

If my application has the credentials of two users, user A and user B, whose accounts / mailboxes are on the same Exchange server, there is a way that I can copy an item (for example, email address) from the user folder Mailbox for one in user B and save local traffic on the Exchange server?

No user should delegate / grant access to another, and I would prefer not to do this through a shared folder.

Answer 1

Exporting using the ExportItems operation and importing using the UploadItems operation are your best options. New content has just been released on MSDN that has discussed this in detail: Exporting and importing items using EWS in Exchange .