Who maintains control over the postal system?

Control over the postal system varies by country. In many nations, a government agency or a national postal service, such as the United States Postal Service (USPS) in the U.S. or Royal Mail in the UK, oversees postal operations. These entities are typically responsible for setting postal policies, regulating services, and ensuring the delivery of mail and packages. In some countries, postal services may be privatized or operated by private companies under government regulations.