The “Do not send email notifications for these reasons” controls emails sent for blocked requests, i.e. the mail template ‘Admin Tools: Blocked request’ (com_admintools.blockedrequest).
The email in your screenshot is something entirely different. It's the email sent by Admin Tools when an IP address is blocked, i.e. the mail template ‘Admin Tools: Automatic IP blocking’ (com_admintools.ipautoban). This email has nothing to do with the “Do not send email notifications for these reasons” option.
If you want to disable these emails –and you should disable them on a production site if you are not troubleshooting a specific issue– you need to go to Admin Tools, Web Application Firewall, Configure WAF, Auto-ban, and remove your email address from “Email this address after an automatic IP ban”.
Nicholas K. Dionysopoulos
Lead Developer and Director
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