This hook can be used for either sending the email if the comment is approved or not. If the “Notify comment author once comment is approved” option is disabled the hook will not work.
Changelog
since 7.2.0 version
Parameters
1. $sendMail (type: bool) – if the mail should be sent to comment author or not
2. $email (type: array) – the email of the user, whom the email should be sent
3. $comment (type: WP_Comment object) – the object of the comment
Usage
add_filter("wpdiscuz_send_email_on_approving", function ($sendMail, $email, $comment) { return false; }, 10, 3);