The United States Postal Service was essentially founded in 1775, when the Second Continental Congress appointed Benjamin Franklin the first Postmaster General. It's primary purpose was, of course, to deliver main from one person to the next.
You know . . .letters.
In simpler terms, the US Postal Service was established to do what you computer does for you now, to deliver what might be called old-school e-mail.
The widespread use of e-mail began in the 80's and in the years since then it has become the most commonly used method of communication...
