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

https://shipping-discounts.s3.amazonaws.com/goshippo/video/pirateship-shipping-reviews.html

Pirate Ship offers USPS shipping discounts up to 87% off, making it a great choice if you mainly ship with USPS. However, their support is email-only, which can slow things down