Be sensitive when writing email messages. The person to whom you are writing may not share your values or cultural background. If you offend someone, apologize immediately. It doesn't cost anything and keeps the peace. Don't take offense easily when reading email messages.
People are often more uninhibited than usual when communicating via email.
However, if someone sends you a threatening email message, do not delete it. Show it to your supervisor and if necessary notify campus security immediately. Never forward a message unless you know it is true, especially email virus alerts. College network personnel subscribe to national and international virus alert services. They will know about a virus long before you do.