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

https://www.random-bookmarks.win/pirate-ship-shines-with-usps-discounts-up-to-87-off-making-it-a-solid-choice

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