Since it’s usually opaque how “mark as spam” and “block” actually works, and since the origin of the mailing lists can be reconfigured any time.. I still feel like I’m endlessly spammed by all the assholes I have to do business with, or else I’m going to miss a bill or a flight.
Yes it's very stupid.
My telco does as well, and I got a free Nintendo Switch from them for just having fiber internet that I would need anyway (the telco just owns the fiber, the ISP then goes over that open fiber, so I pay two different companies, it's the former that has the point program despite being the definition of a dumb pipe)
Some site I haven't used in 5 years reminding me to login and check out their deals? Sounds like a phishing trap to me.