Yahoo is sabotaging my ability to opt-out?

Yahoo has nothing to do with the junk, spam that we get. It's up to us to choose where we go on the internet. Any place you visit you leave a cookie, and if you have to sign in, they have your address. When you unsubscribe they just p your address on to others. It makes it worse. It will take some time for it to stop. Mark each and every one as Spam without opening them. When you open them it tells the sender that your account is active. If you see the email addresses, and they continue, go to Options on the mail screen,click Mail or More Options. On the list to the left click Spam. Copy & Paste or type the address in the block, click Add Block. Upper left click Save Changes. You need to do this for each one. In the meantime, mark them spam