The Universal Postal Union (UPU) is an international organization that facilitates the exchange of postal items between countries. It was established in 1874 and is the oldest international organization in the world. The UPU is responsible for setting international postal standards, providing technical assistance to postal operators, and promoting cooperation between postal services.

UPU tracking is a service provided by the UPU that allows customers to track their postal items as they travel from one country to another. This service is available to all UPU member countries and is free of charge. Customers can track their items by entering the tracking number provided by the postal service. The tracking number can be found on the receipt or on the item itself. The tracking information will provide the customer with the current status of the item, as well as its estimated delivery date. UPU tracking is a convenient way for customers to keep track of their postal items and ensure that they arrive safely and on time.