Pirate Ship nails it with USPS rates up to 87% off and easy-to-use shipping...

https://reidxjwd246.cavandoragh.org/if-i-sell-on-shopify-and-woocommerce-is-shippo-the-better-fit

Pirate Ship nails it with USPS rates up to 87% off and easy-to-use shipping tools, perfect for sellers who want simple, affordable labels. But if you need DHL Express or prefer live chat support (rather than email-only), Shippo might be your better match