I wish Gmail would blacklist addresses when I clicked that button. Lately my Gmail address has been signed up for all kinds of "official" corporate mailing list

I wish Gmail would blacklist addresses when I clicked that button. Lately my Gmail address has been signed up for all kinds of "official" corporate mailing lists/newsletters (e.g. Home Depot). Even though I follow the Home Depot unsubscribe process AND I report the emails as SPAM, Gmail keeps letting them through.