[barmstrong]

This was my biggest questions too, how much you were able to automate it. This seems like it would really only be viable if you could eliminate the human step as much as possible. Like, ideally, some sort of machine that printed, stamped, folded or put in some kind of envelope, and dropped it in a bucket of outgoing mail that the postman could play with.

If you can work ON the process instead of IN it then there is some potential for this to work on volume, but overall really cool idea, props!