Ok this comes up frequently enough to give it a thread for reference. I’m not affiliated in anyway just sold a lot of stuff on the classifieds over the years & saved a bunch of money.
www.pirateship.com
You just create a free account only need to know box dimensions & weight then pick your shipping method & print a label.
USPS stinks!!!! UPS is significantly cheaper & you can easily add insurance…….
Free UPS and USPS shipping software | Pirate Ship
Use our free UPS and USPS-certified shipping software to get pre-negotiated discounts for the cheapest shipping rates, which can save you up to 87%.
USPS stinks!!!! UPS is significantly cheaper & you can easily add insurance…….