44 firstname.lastname@example.org commented
at least Outlook warns where the unsubscribe link is, that's a start.
while risky, some can be removed by closing the new tab before it loads.
many however, don't even link to websites and Outlook doesn't see it as invalid/suspicious nor provides an option to delete them.
a few simply copied the unsubscribe URL of legit unsubscribe pages in order to look legit, and funny enough, those URLs contain data used to login as the throwaway account used to reach them.