Obviously, unsubscribing is more polite.
That said, maybe GMail and friends could add a button based on a List-unsubscribe header?
That said, maybe GMail and friends could add a button based on a List-unsubscribe header?
It was quite common back before RSS feeds and always on internet. One would have newsletters delivered to a MUA and then go offline to save precious minutes from your heady 14.4kbps connection costs.
People still do sign up for newsletters. But there is also a lot of spam masquerading as requested mail.