Part of YCG Email Protection is the ability to perform real-time checks on any links you click. If this feature is enabled, clicking on links in a yellow or red banner email will take you to a page reiterating that Email Protection found the message to be unusual or suspicious. In some cases, a message that originally only had a grey banner contains a link that is later detected as a dangerous phishing URL. In that case, when you click the link, Email Protection’s real-time check will detect you clicked on a bad link, and you’ll be met with a blocker page alerting you of that fact.