anon had a similar e-mail blackmail threat ~2014. I just laughed cause anon had already come clean to my then partner, and others, about my online & offline activities… anon free from from the spirit of fear.
I may have told them to fuck off… idr but I continued to ignore subsequent threats and eventually never heard from [them] again.
though other Glow-Nigglet gang-stalking tactics increased from that time on including attacks on my business and living-location.