Letter delivery is the process of transporting written messages, typically on paper, from one person to another. This service can be provided by various organizations, including postal services like the United States Postal Service or private companies such as FedEx and UPS. Delivery can occur through traditional mailboxes or directly to recipients' homes or businesses. The delivery process usually involves several steps: collection, sorting, and transportation. After a letter is dropped off at a mailbox or post office, it is sorted based on its destination. Then, it is transported to the appropriate location, where it is finally delivered to the recipient's address.