Your plugin is very interesting for our association.
We use the last version of WordPress 3.5.1 multisite with the theme Striking.
We have set up a specific notification email (Additional Email in Settings->Discussion).
When a new visitor let his comment (with his email and name), the comment notification is sent only to the administrators (following the classical way).
After approbation of the comment, the notification is sent to the additional email…
Is there a workaround ?