The postal system is a network that facilitates the sending and receiving of letters, packages, and other mail. It operates through various services, including post offices, mail carriers, and sorting facilities, which work together to ensure that items are delivered to their intended destinations. This system is essential for communication and commerce, allowing people to connect over long distances. It often includes different delivery options, such as standard, express, and international shipping, to meet the needs of users. The postal system is managed by government agencies, such as the United States Postal Service (USPS) in the United States.