What were Persian letter carriers who rode horses called?

Persian letter carriers who rode horses were called chapar. This term comes from the Persian word "chapar" which means "fast" or "swift," reflecting their crucial role in delivering messages quickly.

These riders were essential to the vast Persian postal system, which was renowned for its efficiency and speed. They would travel long distances across the empire, relaying messages from the king to officials and military commanders, and bringing news from distant provinces back to the capital.