Can't unsubscribe to blog posts

I'm still receiving blog subscription notification emails, even after unsubscribing from the blog. The emails do not have an unsubscribe link at the bottom and if I look in the admin console, my email address doesn't appear anywhere. If I do subscribe to a blog category, I receive two emails, one with the unsubscribe link and the other without. I then show up in the list of subscribers and can also unsubscribe to the blog category. No matter what I do, I still receive emails every time a new blog post goes up. I am the super user on the site, but I see no options that suggest that I should be getting these emails and I can't figure out how to stop them.