Correos

Sociedad Estatal de Correos y Telégrafos, S.A., or Correos, is the national postal service in Spain recognized by the Universal Postal Union. The company is 100% owned by the state, a state industrial holding company.
It has 63,000 employees and sends 5.4 billion emails every year. Correos is one of the largest postal services in the world. It is based in Madrid and has more than 10,000 postal centers throughout Spain.
As part of its R&amp;D initiatives, Correos is participating in several European projects, this includes: