Are you looking for a way to find the users that have an unconfirmed email address? The Report Builder is what you are looking for! With this feature, you will be able to export a report of these users.
Go to the Training Admin Workspace and select Reporting -> Report Builder in the left navigation panel.
After selecting the Create New Report button you will be able to navigate to all the available predefined reports.
Find the Members Report and click the continue button.
Add the Confirmed Emails field by choosing this from the list of the additional fields.
By adding this field you have the option to select the False value to depict the users who haven't confirmed their emails.
Save and Download the report and you will receive a report of the users who have unconfirmed emails.