We've been using Shippo for a couple of years now. It's so easy to use. I have a small boutique clothing store in Los Angeles and I started processing online orders for my shop a few years back to be able to service my clients across the country and abroad. With a mail scale and Shippo I have everything I need to easily and quickly fulfill all of my customer's shipping needs. I can ship cheap in the USA and they've made creating customs forms for shipping oversees a BREEZE!
They're super responsive in support and have answers and solutions! I couldn't be happier with the service and highly recommend it!