For a Free Phishing Security Test, the email addresses will remain in KnowBe4's database for a limited time.
This is required to track unique email opens and clicks. For customers of KnowBe4, the Ongoing Phishing Security Tests will need to ‘persist’ email addresses so that we can periodically send simulated phishing attacks to the correct individuals.
This will also be used so that you can track which of your users are failing the tests. The addresses will not be used for any purpose other than the security audit, nor will the addresses be given/sold to any third-parties for any purposes. You can archive any email address at any time.