King James Version
And he wrote in the king Ahasuerus' name, and sealed it with the king's ring, and sent letters by posts on horseback, and riders on mules, camels, and young dromedaries:English Standard Version
And he wrote in the name of King Ahasuerus and sealed it with the king's signet ring. Then he sent the letters by mounted couriers riding on swift horses that were used in the king's service, bred from the royal stud,New International Version
Mordecai wrote in the name of King Xerxes, sealed the dispatches with the king's signet ring, and sent them by mounted couriers, who rode fast horses especially bred for the king.