使用 Twitter API 获取电子邮件

我已经要求提升Twitter的权限，他们授予了我。所以现在我必须收到用户注册的电子邮件，但我不知道怎么做。这就是我所拥有的，有人知道我应该怎么做吗？

if(isset($_REQUEST['oauth_token']) && $_SESSION['token'] == $_REQUEST['oauth_token']) {
    //Successful response returns oauth_token, oauth_token_secret, user_id, and screen_name
    $connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, $_SESSION['token'] , $_SESSION['token_secret']);
    $access_token = $connection->getAccessToken($_REQUEST['oauth_verifier'], ["include_entities" => 'true', "skip_status" => 'true', "include_email" => 'true']);
    if($connection->http_code == '200')
    {
        //Redirect user to twitter
        $_SESSION['status'] = 'verified';
        $_SESSION['request_vars'] = $access_token;
        //Unset no longer needed request tokens
        unset($_SESSION['token']);
        unset($_SESSION['token_secret']);
        header('Location: twconfig.php');
    }else{
        die("Ha surgido un error, por favor inténtelo denuevo más tarde.");
    }
}