Postal history is the study of the development and evolution of postal systems and services over time. It includes the examination of mail delivery methods, postal routes, and the establishment of postal regulations. The history of postal services dates back to ancient civilizations, where messengers were used to carry messages, eventually leading to organized postal systems. The invention of the postage stamp in the 19th century revolutionized mail delivery by allowing senders to prepay for postage. This innovation made sending letters more accessible and efficient. Collecting postal artifacts, such as stamps and envelopes, is a popular hobby that helps preserve the rich history of communication.