Global Monitoring System

The Global Monitoring System allows Posts to use radio frequency identification technology for accurate testing of quality of service.

One of the UPU’s main goals as an intergovernmental organization is to help its member countries improve the quality of mail services for customers worldwide. Quality testing plays a critical role in achieving this as it provides objective measurements.

How it works

With billions of letters circulating around the globe every day, it would be impossible to measure the delivery performance of each item. Instead, test letters containing an RFID tag or transponder simulate the actual postal traffic between participating countries.

Service performance is measured in terms of the time taken by a test letter to travel from the arrival point at the international office of exchange or airmail unit in the destination country to the final delivery point.

Independent participants or panellists in one country post test letters containing passive RFID transponders or tags to other countries and then record the time and date of sending. Once a test letter reaches the first operational facility at the country of destination, RFID antennae or gates, installed onsite, log its arrival.

The receiving panellist ultimately registers the test letter’s delivery at its final destination. This process produces the bulk of the data required to determine a Post’s quality performance on mail coming into the country.

At the heart of GMS is accessibility – be it its use of open technology standards, a not-for-profit basis, availability to any UPU member country and its designated postal operator, or affordable pricing.


2009: GMS launched with 21 Posts

2010: 31 additional Posts sign up

2011: 52 Posts are using GMS



UPU strategy

Quality of service

Helping member countries improve the quality of mail services for customers worldwide.

Related link