[yakk0]

Same. The ones that surprise me are the credit card information or cell phone plans. I was able to contact the phone company and tell them to remove my address, but the credit card was an exercise in frustration. You can't get through without account or personal info. I just mark most of them as spam these days.

[Red_Leaves_Flyy]

Forward the email with the explanation you've given to abuse@<sender>. Most companies should have someone monitoring such an inbox. If that doesn't work I'd call the desk of the cto or shame them on Twitter.