So mulled over the nuclear option and decided to give it a pass. At least for now; I'll keep it in mind in the event he decides to escalate things even further.
Once retaliation was off the table - for the time being - I was able to better focus on the problem at hand. Simple. White listed all my contacts and everything else goes directly to my spam folder. Easy peasy lemon squeezy.
Now, I just need to resist the impulse to taunt him - which was never really my strong suit.
