How can I avoid a virus infection from email?

How can I avoid a virus infection from email?

Most users get viruses from opening and running unknown email attachments. Never open anything that is attached to an email message unless you know the contents of the file. If you receive an attachment from a familiaremail address, but were not expecting anything,you should contact the sender before opening the attachment. If you receive a message with an attachment and you do not recognize the sender, you should delete the message.Selecting the option to view your email messagesin plain text, not HTML, will also help you to avoid a virus.