We used Fourthwall to fulfill Backerkit…
We used Fourthwall to fulfill Backerkit rewards, and it was great. We created gift links for each backer, which allowed them to input their addresses and receive their items directly, without having to pay. The Fourthwall balance also let us use a company card without sharing our address information with every backer, which I appreciated for privacy reasons, as our credit card address and our public-facing address are different. Orders went out promptly, and customer service was the best I've ever had! (I emailed to ask about backerkit integration, and they passed it along to the product team to add to the roadmap.)