If my ex is out of the picture, why is his wife trying to get into my life?

So I was dating my last fiance for about 3 years. Until I caught him cheating on me with his ex-girlfriend (which he still denied) About 3-5 months after the break up, his "new girlfriend" (his ex) got a hold of my email and began to email me pictures and letters which I believe was with the intent to hurt me. I spoke to my ex about this situation, but of course he ignored me and claimed it was just an attempt of mine to "taint" her image. It hurt for the longest time of course, but I got over it and moved on. It's been 2 years now since then but still believe it or not, she's at it again. I found out they are married now, and I as well got married. I wanted to email my ex again, but I stopped myself and just blocked and ignored her messages which helped for now. I showed the few emails I read to some of my friends (who are/were friends of my ex as well) and even they couldn't believe it. I've had the same email before I met him and I'm not about to change it for some looser. Help?