You need to know that they are being bullied. You are going to need to talk to your child and find out whether they are getting any objectional emails. If they've got a problem and they seem like they are upset about something, you need to start looking at their email and ask them if there is somebody that is sending out information that is causing you a problem. Sometimes, they will talk to you about it. I would definitely start with being able to communicate with your child. If you find out that they are being bullied, 'cyberbullied', you are going to need to get to the kid's parents that are doing that and sit down and have a chat with them and show them what emails their child is sending to your child or, in a lot of cases, what emails their child is sending about your child to all kinds of other people.