This used to be one of my favorites. I tried watching this again, high as a kite, with my wife the other day and we made it 35 minutes in before going back to rewatching I Think You Should Leave for the 100th time.
I've worked in automated marketing for close to a decade now. Use your inbox's report as spam function. It'll damage their sender rep resulting in more of their emails automatically going to spam and will usually add you to their application's system level unsubscribe list automatically. I usually do this if a company's preference center requires me to log in to global unsubscribe.
Same, MMO username since Ragnarok just slight variations of spelling.