The Universal Postal Union (UPU) is a specialized agency of the United Nations that coordinates international postal services. Established in 1874, it aims to ensure that mail can be sent and received across borders efficiently and reliably. The UPU sets international postal standards and promotes the development of postal services worldwide. The UPU has 192 member countries, making it one of the largest international organizations. It facilitates cooperation among postal services, helping to improve communication and trade globally. By providing a framework for international mail exchange, the UPU plays a crucial role in connecting people and businesses around the world.