I get emails on addresses that don't have linkedin accounts. I've opted out in every way indicated in the emails. They keep coming. AFAICT the only way to stop

I get emails on addresses that don't have linkedin accounts. I've opted out in every way indicated in the emails. They keep coming. AFAICT the only way to stop those is to actually create an account on that address. On the address that does have an account, I've opted out of every kind of email. They just keep adding new kinds of emails every few months that I then have to opt out of again.