I can see a ton of uses for this. Birthday cards, thank you cards for customers, physical appointment reminders for doctors/dentists, having petitions and onlin

I can see a ton of uses for this. Birthday cards, thank you cards for customers, physical appointment reminders for doctors/dentists, having petitions and online organizations that send harder-to-ignore physical mail to your congress people. With full color printing this becomes even more interesting - direct mailing campaigns become feasible (if expensive) for startups, even with customization.