edublog email update

I'm trying to help a colleague set up an edublogs blog and am having trouble locating a widget. Viewers of my blog have the ability to subscribe and receive email updates whenever I write a new post. I convinced her to use edublogs because of this feature but when we went to her set-up that widget isn't available (I am a paid supporter and she is not). I've looked through stuff on the edublogs site and can't find any information. Does anybody know either where I can find that widget in edublogs or know of another one out there.

Thanks!