Courier and messenger responsibilities are to walk, ride bicycles, drive vehicles, or use public conveyances to reach destinations to deliver messages or materials; plan and follow the most efficient routes for delivering goods; unload and sort items collected along delivery routes; receive messages or materials to be delivered, and information on recipients, such as names, addresses, telephone numbers, and delivery instructions, communicated via telephone, two-way radio, or in person; load vehicles with listed goods, ensuring goods are loaded correctly and taking precautions with hazardous goods; sort items to be delivered according to the delivery route; deliver messages and items, such as newspapers, documents, and packages, between establishment departments, and to other establishments and private homes; perform routine maintenance on delivery vehicles, such as monitoring fluid levels and replenishing fuel; record information, such as items received and delivered and recipients' responses to messages; obtain signatures and payments, or arrange for recipients to make payments; call by telephone to deliver verbal messages; check with home offices after completed deliveries to confirm deliveries and collections and to receive instructions for other deliveries; open, sort, and distribute incoming mail; perform general office or clerical work such as filing materials, operating duplicating machines, or running errands; unload goods from large trucks, and load them onto smaller delivery vehicles; collect, seal, and stamp outgoing mail, using postage meters and envelope sealers.