Bulk Email

I am not interested in bestiality, incest or female porno. I have a Home Depot credit card already. I am not ready to join the ranks of Costco/Sam's Club members. I have no need for free stuff that will somehow cost me later. I am tired of checking my email, and finding bulk emails by the dozens when I first check my messages in the morning. How do I stop this, without "unsubscribing" (not that I subscribed to begin w/.) and alerting them that they have a working email. So won't they just keep sending this crap?