Great idea and name. My only criticism is for it to be really smart I'd love to be able to reply without having to login to maily. That would really become like a safe version of email. Another would be for the child to be able to request to add a contact (like a friend) where the parent is sent a notification with the email and a note.

The other thought would be an iPhone app. The iPad was definitely a smart place to start with but I know a lot of kids (maybe slightly older) have iPod Touches with parental settings on, these are replacing the Nintendo DS and goes everywhere with them.