Pirate Ship offers USPS shipping discounts up to 87%, making it great for...

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

Pirate Ship offers USPS shipping discounts up to 87%, making it great for sellers focused on cost savings with USPS. However, if you need DHL Express or prefer live chat support instead of email-only help, Shippo might be a better fit