Home Depot does this with their card readers. I entered my email address once to send an emailed receipt, and forever after, if I use that same card, it will j

Home Depot does this with their card readers. I entered my email address once to send an emailed receipt, and forever after, if I use that same card, it will just send me an email with my receipt. Note: this is not even a Home Depot card, it's just my everyday Visa card. I've also seen this with anybody that uses Square - it can be a little surprising because I'll check my email and see a receipt for a random food truck that I got a hotdog from or things of that nature.