Pirate Ship offers USPS shipping up to 87% off with easy label printing and no...

https://simonoaeq490.yousher.com/should-i-stick-with-pirate-ship-if-i-ship-under-75-packages-a-month

Pirate Ship offers USPS shipping up to 87% off with easy label printing and no monthly fees—great if you mainly ship domestic. Just know their customer support is email-only, which might slow things down