If you can't block, I would just delete. I know it's hard you want to see what's written but believe me it's not worth it. Don't waste energy and time on trying to figure out anything, you can't. I wasted about 6 months trying to figure it all out, trying to find closure but it's such a sick twisted mindset you'll never be able to figure them out. He's emailing you to keep you in his game.

When mine began emailing me after no contact they were just friendly type emails or cards wishing me well. I would respond and he would never open my emails for a week or more at times. Then he commented about how annoying it was that some people keep sending email to his "old" email address that he was hoping to close out. I caught on that he was just baiting me so he could pull his passive aggressive crap with me to make me feel bad. From that moment on I never emailed him again and stopped reading his.

Game = ATTENTION! It is ALL about getting a rise out of you. They feed off of it. He wishes to incite interest, curiosity, jealousy, anger...whatever it takes for you to look his way. I guess the answer is to just: don't. I'm preaching to myself, too. :)