I've had a couple of serious offenders like this: way too many repeated emails, clearly automated but also obviously trying to deceive in that regard. In a couple of fun cases, they have used the names of actual, important people at the company as the sender - I guess to seal the deal and make me feel like this is an important email and I'm an important user.<p>Here's what I do to feel slightly empowered (although it has no effect other than finally stopping emails from that particular company): I call the company, and I tell them the name of the person I need to speak to urgently. Since it's the name of a VP or something often attached to these emails, that person is usually busy. But I tell the person on the other end that I've received 3 emails from them, and that they have insisted on speaking with me, and it's obviously very important. They will eventually get pulled out of a meeting to speak with me on the phone, at which point they realize that I'm responding to one of these emails. And they tell me it's fake and they didn't actually want to personally speak with me, and then I tell them the email is a lie and I hope they learned their lesson.<p>It's childish and stupid, but man does it make me feel good to call them on their crap.