I remember there were multiple times I was threatened with blackmail by the BPD ex. I've read that this is fairly rare though and maybe there was another personality disorder at work. All pertains to lack of boundaries, empathy, disregard for someone else. He used to say that he would send these nude pictures that he took of me to my friends and family and post them on the Internet

he even sent me a 500 page email when I was NC of our Skype convo that he swore he would send to everyone I knew so they could know what an awful person I was and punish me accordingly. The best thing I did was NOT freak out and just ignore ignore ignore! I'm sure if I jumped on that, begging and pleading for him to respect my privacy those would be sent out. like a child, he lost interest in blackmailing when I showed little interest in his threats.
So did anyone else experience blackmail? He was going to "ruin your life" as he put? Is this BPD or a whole other personality disorder? Psychosis maybe?