protected function registerContactMailer()
    {
        $this->app->bind('contact.mailer', function ($app) {
            $mail = $app['mailer'];
            $home = $app['url']->to('/');
            $path = $app['config']['contact.path'];
            $email = $app['config']['contact.email'];
            $name = $app['config']['app.name'];

            return new Mailer($mail, $home, $path, $email, $name);
        });

        $this->app->alias('contact.mailer', Mailer::class);
    }