Please try below steps to configure 'User based alert' for any profile that is already configured with email notification.
1. Go to Alerts tab -> Email notification
2. Click on the icon that modifies the corresponding alert profile
3. Check 'Advanced configuration' box and then select ' User based Alerts '
4. Ensure all accounts are selected except that service account
5. Save the alert profile
Hope it helps.
Regards,
ADAudit Plus Team