Recognized emails are all emails in which the attack was not successful. This includes emails that were not responded to. If they were reported, they fall under the category "reported."
You can view them in the User Panel under Phishing Simulation:
Click on "reported" and "fell for it" to gray out these fields and display only the timeline for recognized emails. In this example, two recognized emails are shown.
These recognized emails are neutral for the Employee Security Index. They are neither negative nor positive.
In the Control Panel, recognized emails are referred to as "ignored emails." Under Security Awareness Service, you can find the existing statistics with the ignored emails for phishing simulation under Statistics > Phishing: