Postal services are systems that manage the sending and receiving of letters, packages, and other mail. They operate through a network of post offices, delivery routes, and transportation methods to ensure that items reach their intended destinations. Postal services are essential for communication and commerce, allowing people to connect over long distances. These services often include various options such as standard mail, express delivery, and registered mail, which provides tracking and security. Many countries have their own postal systems, like the United States Postal Service (USPS) in the United States or Royal Mail in the United Kingdom, each with specific regulations and pricing.