问Laravel 5.5通过gmail发送电子邮件，从数据库配置

EN

protected function makeEmail($config, $data){
  try{
    $account =  Settings::getEmailItem($config->account);
    Config::set('mail.driver','smtp');
    Config::set('mail.host',$account['host']);
    Config::set('mail.port',$account['port']);
    Config::set('mail.password',$account['password']);
    Config::set('mail.username',$account['username']);
    Config::set('mail.from.name',$account['from']);
    Config::set('mail.from.address',$account['username']);
    //Config::set('mail.encryption','tls');

    $app = App::getInstance();
    $app->singleton(TransportManager::class, function($app){
      return new TransportManager($app);
    });

    $mailer = new Swift_Mailer($app['swift.transport']->driver());
    Mail::setSwiftMailer($mailer);

    $recipients =  collect(explode(',',$config->recipients))->map(function($recipient) use($data){
      $matches;
      if(preg_match('/^{{\$(.+)}}/',trim($recipient),$matches)){
        if(array_key_exists($matches[1],$data)){
          return $data[$matches[1]];
        }
      }else{
        return $recipient;
      }
    })->all();
    //dd(config('mail'));
    Mail::to($recipients)->send(new SendFreeEmail($config, $data));
  }catch(\Exception $e){
    dd($e->getMessage(), $e->getCode(), $e->getLine(), $e->getFile());
  }