If you can think of it someone has tried it. You can do almost anything with an image link which is why they are blocked now. A clickable is a fallback.— David Abigt (@deabigt) July 24, 2019
As for unsubscribe links in particular, best case, all they do is confirm your email address so they can sell it on for more.
from Twitter https://twitter.com/deabigt
July 24, 2019 at 04:45PM