Mail carriers are individuals responsible for delivering letters and packages to homes and businesses. They work for postal services, such as the United States Postal Service (USPS), and follow specific routes to ensure that mail reaches its destination on time. Mail carriers often sort mail at their local post office before heading out on their deliveries. In addition to delivering mail, mail carriers may also collect outgoing mail from mailboxes. They play a crucial role in communication and commerce by connecting people and businesses. Mail carriers often work in various weather conditions and may use vehicles, bicycles, or even walk to complete their routes.