Pirate Ship offers USPS rates up to 87% off, making it a solid choice if you...

https://www.slideserve.com/soltostvly/what-s-the-simplest-way-to-compare-pirate-ship-and-shippo-without-overthinking-i

Pirate Ship offers USPS rates up to 87% off, making it a solid choice if you mostly ship domestically with USPS. Support is email-only, which might slow things down during busy times