About U.S. Postal Service: As the United States Postal Service continues its evolution as a forward-thinking, fast-acting company capable of providing quality products and services for its customers, it continues to remember and celebrate its roots as the first national network of communications that literally bound a nation together. Ours is a proud heritage built on a simple yet profound mission: Bind the nation together. Connect every American, every door, every business, everywhere through the simple act of delivering mail and packages. This idea of universal service is at the heart of the $1.4 trillion industry that employs more than 7.5 million people and drives commerce, plays an integral part in every American community and remains the greatest value of any post in the world.