Spam a come common term now associated with emails sent to your email without your permission. A simple tip when you see a message that looks like spam. Do not open the spam message for it will relay a message back to the original sender that you have opened the email.Which in return is a response. Once a spammer knows that you will open a spam letter he or she will then sell your email to other spammers.
Opt out option does not work. Plain and simple you will get more spam just by clicking on the message.