ZillaDog is a provider of free, kid safe, email. Zilladog email prevents kids from receiving emails from anyone that is not on their parent approved buddy list. Parents control the contact list in their child's email account. ZillaDog also has an integrated profanity filter and parent message moderating options.
ZillaDog could be a good, safe, free email option for parents who want to teach their children safe online behavior while still maintaining a safety net.