Yes, we use Shippo at Bohemain Guitars. They are great.
*Adam Lee *
Cofounder & CEO | 678.468.0733
*Strings to your door for only $7 per month
Entrepreneur | Senior Manager, Product Development at Easy Autos
October 25th, 2015
If you're looking for a more comprehensive solution, consider ShipStation. I use them with Shopify, Amazon, Etsy, and ebay, but they work with pretty much every single e-commerce solution on the web today, and they're constantly improving.