The use of couriers to bear written messages is presumably as old as the art of writing itself. The entrusting of messages to those traveling on other business (trade, pilgrimage, etc.) is attested from ancient times. States in many parts of the world and in many periods have instituted some sort of cadre of official
Postal clerks are employees of the United States Postal SerÂvice (USPS). The equivalent employees at package delivÂery companies have different titles but perform many of the same duties; at Federal Express they are called service agents, at United Parcel Service, administrative assistants and account executives. Their job duties may be diversified, depending upon the size