OPT OUT PINPOINT

You're screwed haha. I once got taken off but then I was re-added months later. One of their people literally told me he'd take me off but couldn't promise I wouldn't be re-added later. The worst company ever. 

block their domain name. They also cold call sometimes smh

You can't. I've tried before a thousand times but they're people have multiple email addresses of the two firms (pinpoint and water street search) and you will continue receiving them till the end of time. I always block each email address so that the volume goes down but yeah they are ridiculous.

You have to kill the final boss

I report them as spam every time I get one of their emails

Try reporting via CAN-SPAM / FTC + CASL + BBB and then shit on them via Google Reviews and any other way possible. Write awful reviews about their offices on Glassdoor. Post Recruiters emails on hacking and bug abuse sites as targets. Fight fire with fire.