Strictly speaking, Graphus doesn't stop suspicious emails from reaching the recipient. Graphus is a 'cloud-native application' that integrates with the cloud platform APIs. In this approach, Graphus analyzes the email once it has reached the inbox and either quarantine the email and/or generates an alert if a threat is found. In the alert, Graphus also reveals which recipients have already opened the email and could be exposed to the threat. IT can execute instantaneous Incident Response based on this knowledge.