public function __construct() {
		// Uses unique prefix per blog so each blog has separate queue.
		$this->prefix = 'wp_' . get_current_blog_id();
		$this->action = 'wc_emailer';

		// Dispatch queue after shutdown.
		add_action( 'shutdown', array( $this, 'dispatch_queue' ), 100 );

		parent::__construct();
	}