Many spam emails I get these days from companies say things like "Unsubscribe from this list" so for example I have to unsubscribe from their "Daily Digest", "Weekly Digest", "Recommendations", etc. all one at a time.
And there's no guarantee how many of those "lists" you are on with some softwares. You might have a one-click unsubscribe, but you just one-click unsubscribed from the first of 100 lists you were placed on for that company.
