Now this is a really cool video. It outlines how the post office works and how they move millions of mail pieces a day with a national network. Did you know they deliver to over 150 million addresses daily? That’s crazy to even think about.
In the video they outline how each class of mail moves through the postal network and get to your mailbox.
See the giant screen exhibit in person at the National Postal Museum in Washington DC! Visit the entire Smithsonian online exhibit: http://npm.si.edu/systemsatwork