Get Comments By Comment Author Email

				$query_args = array(
	'author_email' => 'commentauthor@gmail.com',
	'number' => 10,
	'order' => 'DESC',
);

$query = new WP_Comment_Query( $query_args );

if ( ! empty( $query ) && ! is_wp_error( $query ) ) {
	foreach ( $query as $comment ) {
		// do something
	}
}
else {
	// no terms found
}