There was also a post office in ancient Rome. It was called cursus publicus (“the way of the states”) and was a state post office, resulting from the territorial development of the Empire that required efficient communication and administration.
The post office was used to transport letters, parcels, and later also people. Thanks to the existence of ordinary roads (in the 3rd century CE they were about 250-300 thousand km) and paved roads (about 80 thousand km), the post office was very fast for those times.
At first, only horse riding courses were created. Ships sailing in the Mediterranean Sea were also used. With time, mainly due to Octavian Augustus, carriage and cart courses appeared.