Huh, just had a store from which I ordered something a few years ago send me a promo email with subject line "Order #12353 is ready to ship."
That got me to open the email, semi-alarmed, since I had not in fact ordered anything from them. Haha, just kidding, the email said "But we are still waiting for yours. Take this gift from us!"
Instead, I unsubscribed and won't buy anything from them again. Assholes. Don't do that shit