Use a plain envelope or an envelope with a blue and red border for mailings to foreign countries . If a distribution list is attached to the mailing, you must include addresses with each name. Type or print a complete return address and include all necessary information for the addressee. If all criteria has been met, you may seal the envelope and forward it directly to BUS-4 at MS A190.
Express mail requires a street address.
Express mail cannot be delivered to a post office box. All express mail to Russia requires the recipients telephone number. All foreign mailings that do not have the proper addresses, return addresses, and export designations will be returned to the sender for corrections or destroyed if the sender is unknown. Operated by the University of California for the National Nuclear Security Administration , of the US Department of Energy.