Have you ever tried to do unsubscribe in spam or Spam emails? If you have not tried it, you should 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 nice because it's not. The spammers didn't add the deletion link because they thought it might bother you. Nor did they realize that some people will never respond, so they try to narrow down 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 the fake σελίδα deletion it has created Spammer, you give it browser information that useste, 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.
