[kjs3]

I get a ton of UCE, probably because we use easy to guess email addresses ([e-mail]) and I have a title that implies I control a budget. I would say maybe 1 in 50 complies with the CAN SPAM Act (US) or mandatory opt in rules (EU). Perhaps 1 in 25 has a "click here to unsubscribe". Occasionally, the author will have a "reply with unsubscribe and I'll take you off my list", which I suspect is just to confirm you're there to try a slightly different tactic on you. My junk/ignore rule has a couple of thousand entries (and I carry it with me from job to job). These days I find myself banning whole domains because these frauds have taken to sending multiple spams with different From addys in the same domain specifically to try and get past Outlooks default of only adding that sender to the block list.