The confirmation email isn't a bad idea. I wouldn't mind it too much. Perhaps a simpler idea though is to make sure the users can easily delete data or routes

The confirmation email isn't a bad idea. I wouldn't mind it too much. Perhaps a simpler idea though is to make sure the users can easily delete data or routes that are sent in via email. It doesn't really solve the "spam" routes that could be added to an account, but it does make it easy for a customer to clean it up. Perhaps require confirmation if many routes are uploaded in a short amount of time. Perhaps require a secret key hash to be included in the subject of the message.