Internet safety for children starts with recognising the email address of the sender. Also,if the subject line sounds vague or irrelevant to you then don’t even bother opening the email – just delete it.
If you have opened the email and realised it is not from someone you know then definitely don’t click any of the links in the email. If you receive a dodgy sounding email from a friend then check they sent it before clicking any links – their email account may have been hacked
Make sure you delete any messages from people you don’t know.
Don’t send pictures
If you haven’t met the person in real life then don’t send them a photo. If your email partner is asking for a picture then you should ask a trusted adult first.