Got any recent evidence for this? Because I'm not sure if this is actually still the case. I don't have the link anymore because this was already a couple of y

Got any recent evidence for this? Because I'm not sure if this is actually still the case. I don't have the link anymore because this was already a couple of years ago, was someone taking this ages-old advice to the test. Clicking the "unsubscribe" link on all spam delivered to an old spam-infested email address, he found that it reduced the amount of spam received to that address by a significant amount.