When clicking on links on websites, I always glance at the "Status Bar" at the bottom, just to make sure I know where I'm going. However, on e-mails, I can't do this, and this is where it's most required, because most scam e-mails contain information in the URL so that if you click on it, they know that e-mail address exists and they continue to spam you. What should take place is first of all there is a status bar for links, but secondly, there is an optional feature where if turned on, it warns you before you click on the link that it takes you to a website that is different from the person's e-mail address. Therefore, if someone pretending to be from paypal.com sends you an e-mail, yet the link takes you to nonsense-domain-name.com, it will warn you not to click on it. These can be determined by specific rules, where you only set it to on if the person has never e-mailed you before, or the system believes it's junk etc. Does anything like this exist?