National U.S. Postage Stamp Day National U.S. Postage Stamp Day is celebrated on July 1st and recognizes the ease with which we can send and receive mail. The first U.S. postage stamp was issued on July 1, 1847, however, it wasn't until 1855 that postage stamps became mandatory. Postage stamps have a fascinating history, and have become an extremely popular collector's item due to the artistry and design work involved in creating them. Today's electronic means of communication may have diminished the use of "snail mail", but there's still nothing like the charm of receiving a physical card or letter. A handwritten note carries with it the sender's time, thoughtfulness and care, something no text or email can provide. Observe National U.S. Postage Stamp Day by sending a letter or card to someone special to you. It's a great opportunity to connect with someone you haven't spoken to in awhile, as well as the perfect time to show off your custom address stamp from !