My conclusion: It was much easier for me to create rules and filters to delete automatically whatever I was not interested in anymore, than going through all the different opt-out protocols.

If you control your email (exchange, or even gmail, yahoo mail, etc…) put the rule at the highest level you can reach so mails do not even reach your outlook or whatever mail client you are using.

I agree it is not the way it should be, but at least it worked for me.