Not only can you create and print your own USPS shipping labels online, you can also request package pickups and save yourself a trip to the post office.
The USPS website offers consumers and small businesses a free online service, Click-N-Ship®, that lets you create pre-paid shipping labels for many of its service levels, including Priority Mail® and Priority Mail Express®. If you want access to other USPS shipping classes, like First Class Mail® and Certified Mail™, PitneyShip is your best option.