I love Shippo as a product and even more so as an example of startups solving unsexy problems with technology.
Payments before Stripe and Square were a pain in the ass. Shipping is a similar backbone to the economy that, for businesses, just sucked.
Building one universal shipping API and taking advantage of carrier bulk discounts even for the smallest businesses makes a much more demonstrable impact than a chat bot.
Good on them. Also amazing blog name (Get Put Post.)