Have you ever tried unsubscribe to Spam or Spam? If you did not try it good you would never do it. If you open spam emails you will notice that they also contain a link to delete your email from the list.
Don't think it's cool because it's not. The senders Spammers they didn't add the delete link because they thought they might bother you. Nor did they realize that some people will never respond, and so they try to limit their lists for more efficiency.
If you click “Unsubscribe” or Unsubscribe in an unsolicited email you will make a very big mistake. The Results they will be completely opposite of what you expect.
Let's see why:
While "legitimate companies" seem to respect each recipient's deletion requests, malicious users use the deletion links to confirm your address and send you more spam.
Sophos Alan Zeichick reports that a click on the unsubscribe tells the sender that you opened your email, probably because you were interested or why you might have imagined that the spam was real.
With your visit to fake delete page created by spammer, you give him program information tours you use, the operating system, but also your IP address, risking even more and more targeted malware attacks.
If an email looks like an unwanted message, do not click on any link. Simply mark it as spam and immediately send it to your spam folder.