When was royal mail founded

Royal Mail, the United Kingdom's postal service, has a long and rich history that dates back to the 16th century. Here's a brief overview:

Today, Royal Mail is one of the largest postal services in the world, with a network of over 14,000 post offices and a fleet of over 18,000 vehicles. It employs over 150,000 people and delivers over 12 billion items every year.