I wonder if there’s variation between EU and US for this. As a counterpoint, I’ve disabled all notifications when I set up my LinkedIn back in 2017 and to this

I wonder if there’s variation between EU and US for this. As a counterpoint, I’ve disabled all notifications when I set up my LinkedIn back in 2017 and to this day I receive no email from them. But if all your notifications are off and they are still spamming, just set up an email rule to trash all the messages from their domain and call it a day. If you want to deter this behavior find the email address of someone whose time is expensive (or an alias like legal@) and adjust your rule to forward all the spam there.