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filter is not described

comment_notification_recipients filter-hook . WP 3.7.0

Filters the list of email addresses to receive a comment notification.

By default, only post authors are notified of comments. This filter allows others to be added.

Usage

add_filter( 'comment_notification_recipients', 'filter_function_name_6945', 10, 2 );
function filter_function_name_6945( $emails, $comment_id ){
	// filter...

	return $emails;
}
$emails(array)
An array of email addresses to receive a comment notification.
$comment_id(int)
The comment ID.

Where the hook is called

wp_notify_postauthor()
wp-includes/pluggable.php 1419
$emails = apply_filters( 'comment_notification_recipients', $emails, $comment->comment_ID );

Where the hook is used (in WP core)

Does not used.