Could theme cause email address to be blocked as spam?

I love this them and haven't had much issues. I noticed a few months ago my email was being blocked. It was put on some black list as spam. When I went into the website I found that my updates were still sending to an email address connected with DrupalExp that I missed and I think that was the reason it got blacklisted the first time. So I changed it to mine and thought things were fine. Are there any other areas that I may have missed that would cause drupal to send out emails?