When larger items are mailed, the weight of the item and the zip code zone areas affect the cost. Be aware of the major cost difference between 4 th class and priority mailing. In FY99 over 2500 items were mailed out from the CASO using certified mail. Registered mail provides added protection plus evidence of mailing and delivery. Initial postage cost - Varies per item.
Certified mail provides evidence of mailing and a record of delivery.
Additional postage fees plus return receipt fee are charged for international mail. The sender should specify if surface or air mail is requested. Postage cost varies with intended destination. Before using registered or certified mail for your document consider whether this method of mailing is mandated by government regulation or policy. When mailing more than one item to the same individual at the same address, consolidate into one mailing unless regulations stipulate otherwise.