The Mark as Spam feature allows your organization to reject a candidate application from the Application Review process, mark the individual as spam, and automatically reject any future application from that email address.
From the Application Review page, click the Ellipsis icon and select Reject as spam.
Note: This feature is only available if your organization has configured the Spam rejection reason to be visible.
The candidate will be rejected, marked as spam, and any future applications from the email address associated with this particularly application will be automatically rejected.
If you later decide to remove the spam designation on the candidate, navigate to their candidate profile and change their rejection reason to anything other than Spam to allow them to apply again!