The Postal Service Act was a piece of United States federal legislation that established the United States Post Office Department. It was signed into law by President George Washington on February 20, 1792.
William Goddard, a Patriot printer frustrated that the royal postal service was unable to reliably deliver his Pennsylvania Chronicle to its readers or deliver critical news for the paper to Goddard, laid out a plan for the "Constitutional Post" before the Continental Congress on October 5, 1774. Congress waited to act on the plan until after the Battle of Lexington and Concord on April 19, 1775. Benjamin Franklin promoted Goddard’s plan and was appointed as the first postmaster general under the Continental Congress beginning on July 26, 1775, nearly one year before the Congress declared independence from the British Crown. Franklin's son-in-law, Richard Bache, took over the position on November 7, 1776, when Franklin became an American emissary to France.
Franklin had already made a significant contribution to the postal service in the colonies while serving as the postmaster of Philadelphia from 1737 and as joint postmaster general of the colonies from 1753 to 1774. He was dismissed as colonial postmaster general after the publication of private letters of Massachusetts Royal Governor Thomas Hutchinson in Massachusetts; Franklin admitted to acquiring the letters (probably from a third party, and not in any sort of official capacity) and sending them to Massachusetts. While postmaster, Franklin streamlined postal delivery with properly surveyed and marked routes from Maine to Florida (the origins of Route 1), instituted overnight postal travel between the critical cities of New York and Philadelphia and created a standardized rate chart based upon weight and distance.