如何使用PHP對接郵件類別實作郵件的標記與篩選功能？

<?php
if (!extension_loaded('mbstring')) {
    exit('MBString extension not found.');
}

if (!extension_loaded('imap')) {
    exit('IMAP extension not found.');
}

echo 'Mail extensions are loaded.';
?>

composer require phpmailer/phpmailer

<?php
require 'vendor/autoload.php'; // 引入PHPMailer的类库文件

use PHPMailerPHPMailerPHPMailer;
use PHPMailerPHPMailerException;

$mail = new PHPMailer(true);
?>

<?php
$mail->isIMAP();

// 邮箱配置
$mail->Host = 'imap.gmail.com';
$mail->Port = 993;
$mail->IMAPSecure = 'ssl';
$mail->Username = 'your-email@gmail.com';
$mail->Password = 'your-password';

// 连接服务器
$mail->imapConnect();

// 获取未读邮件列表
$mail->imapSearch('UNSEEN');

// 遍历邮件列表
$emails = $mail->getImapSearchResults();
foreach ($emails as $email) {
    echo 'Subject: ' . $email->subject . '<br>';
    echo 'From: ' . $email->from . '<br>';
    echo 'Date: ' . $email->date . '<br><br>';
}
?>

<?php
// 标记邮件为已读
$mail->imapMarkAsRead($email->uid);

// 标记邮件为未读
$mail->imapMarkAsUnread($email->uid);

// 删除邮件
$mail->imapDelete($email->uid);

// 创建文件夹
$mail->imapCreateFolder('MyFolder');

// 移动邮件到指定文件夹
$mail->imapMoveToFolder($email->uid, 'MyFolder');

// 永久删除邮件
$mail->imapPermanentlyDelete($email->uid);
?>