Does anyone know of an addon for Shippo?
It looks like it would be fairly easy for someone to come up with this. Currently the only way to get orders into the Shippo interface is by importing a CSV of orders.
There is no Shippo addon for CS-Cart.
Also, Shippo does not offer Media Mail as a shipping option, which is a deal-breaker for me because everything I ship is eligible for Media Mail.
I ended up using Pirate Ship. It does mean I have to export a CSV from CS-Cart and then import it to Pirate Ship, but it literally takes a few seconds once you know how.