Econlady posted:I keep wondering if I could duplicate the process and put a package of cookies in my mailbox for the day. I individually bag my cookies and heat seal the bag. Would being in an airtight situation cause a problem.
I think it could be a problem. If any moisture is in the cookie (or it's also really humid), the cookie bag could act like a little sauna and steam the cookie. But I'd love to hear the results of your test under different heat and humidity levels! Let us know!