Pirate Ship delivers great USPS discounts—up to 87% off—making it a solid...

https://source-wiki.win/index.php/What_Should_I_Use_If_USPS_Is_All_I_Need_and_I_Hate_Monthly_Fees%3F

Pirate Ship delivers great USPS discounts—up to 87% off—making it a solid choice if you mainly ship with USPS. Support is email-only, which might slow down help. Shippo steps in better if you need DHL Express or want more carrier options