Ok, not getting into a debate about this. It works, people respond all the time. You do need to get it right, but clearly and self evidently it does work! Yes, some people have an almost pathologically aggressive attitude to any kind of advertising, but most people accept it as a fact of life, and actually to be welcomed when it's something they're interested in. And with all due respect, it's almost impossible for you to have never looked at any marketing emails ever. It just doesn't happen. If you want proof, go to unroll.me and put in your email address. It tells you what mailing lists you're subscribed to (and you can immediately unsubscribe from them, it's very useful). I'm willing to bet you're subscribed to a lot more than you think!