Pirate Ship shines with USPS discounts up to 87%, making it great for sellers...

https://bizzmarkblog.com/pirate-ship-vs-shippo-for-beginners-which-is-less-confusing/

Pirate Ship shines with USPS discounts up to 87%, making it great for sellers focused on affordable USPS shipping. But if you need DHL Express or prefer phone support over email-only help, Shippo might be a better fit