In defense of people complaining let me offer a perspective on why the mail was weird. I purchased the license for big box on June 2016, I don't really remember for how long, at most a couple of months. You can check my only thread started on the forum was back on that date.
What made the message weird is that you sent it to a user base that I would guess is largely comprised of people like me, a big portion of inactive former clients, this is something I had never seen before from a company. Imagine some indie developer sending a message to every steam user who ever purchased their game to plead for help against a piratebay user who's uploading it, despite the active players of said game being a way smaller fragment of the total number of purchases.
I want to make clear I mean no ill feeling toward you guys, just trying to explain in my broken english how extremely weird that mail was.