The Blue Arca Anti-Phishing Extension is a 100% free tool that provides a completely private and convenient way for webmail users to mitigate the risk of phishing attacks. No registration is required and it works as a personal anti-phishing advisor to protect them from phishing attacks.

After installing this application, every incoming email with a link or an email from a specific sender will be checked. If it's marked as a possible threat, the user will receive a notification and they can take the necessary measures, such as closing the email or opening it. If you mark it as a safe email, the user won't be notified and you will have the chance to follow the link and see if it's an actual phishing attack or not. It's that simple.