如何用PHP发送AMP邮件？PHPMailer及原生mail()实现疑问

刚好我之前处理过AMP邮件发送的需求，给你分享PHPMailer和原生PHP mail()两种方案的具体实现方法，亲测有效！

PHPMailer本身没有专门的API来直接设置text/x-amp-html类型的内容，但我们可以通过手动添加MIME部分来实现——毕竟AMP邮件要求在multipart/alternative容器里同时包含纯文本、普通HTML、AMP HTML三个内容块。

具体步骤和代码示例如下：

• 先完成PHPMailer的基础配置（SMTP、收发件人信息等）
• 设置常规的HTML内容和纯文本替代内容
• 用addPart()方法手动添加AMP HTML部分，指定MIME类型为text/x-amp-html

require 'PHPMailer/src/PHPMailer.php';
require 'PHPMailer/src/SMTP.php';
require 'PHPMailer/src/Exception.php';

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

$mail = new PHPMailer(true);

try {
    // 配置SMTP服务器信息
    $mail->isSMTP();
    $mail->Host = 'your-smtp-host.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your-email@example.com';
    $mail->Password = 'your-smtp-password';
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
    $mail->Port = 587;

    // 设置发件人和收件人
    $mail->setFrom('from@example.com', 'Your Brand Name');
    $mail->addAddress('recipient@example.com', 'Recipient Name');

    // 邮件主题
    $mail->Subject = 'Test AMP Email via PHPMailer';

    // 普通HTML内容（作为AMP不支持时的 fallback）
    $regularHtml = '<!DOCTYPE html><html><body><h1>Hello there! This is regular HTML content.</h1></body></html>';
    $mail->Body = $regularHtml;

    // 纯文本替代内容
    $mail->AltBody = 'Hello, my friend! This is the plain text version of your message.';

    // 符合AMP规范的HTML内容
    $ampHtml = '<!DOCTYPE html>
    <html ⚡4email>
    <head>
        <meta charset="utf-8">
        <script async src="https://cdn.ampproject.org/v0.js"></script>
        <style amp4email-boilerplate>body{visibility:hidden}</style>
    </head>
    <body>
        <h1>Hello! This is your AMP-powered email content.</h1>
    </body>
    </html>';
    // 添加AMP内容部分，指定MIME类型
    $mail->addPart($ampHtml, 'text/x-amp-html');

    // 发送邮件
    $mail->send();
    echo 'AMP email sent successfully!';
} catch (Exception $e) {
    echo "Message couldn't be sent. Error: {$mail->ErrorInfo}";
}

如果想用原生mail()函数，就得手动构建完整的MIME邮件结构，核心是正确设置MIME边界，并依次添加三个内容部分。

代码示例：

$to = 'recipient@example.com';
$subject = 'Test AMP Email via Native PHP mail()';
$from = 'your-email@example.com';

// 生成唯一的MIME边界字符串
$mimeBoundary = uniqid('amp-mail-boundary-');

// 构建邮件头部
$headers = "MIME-Version: 1.0\r\n";
$headers .= "From: {$from}\r\n";
$headers .= "Content-Type: multipart/alternative; boundary=\"{$mimeBoundary}\"\r\n";

// 准备三个内容块
$plainTextContent = "Hello, my friend! This is the plain text fallback for your email.";
$regularHtmlContent = '<!DOCTYPE html><html><body><h1>Hello there! This is regular HTML content.</h1></body></html>';
$ampHtmlContent = '<!DOCTYPE html>
<html ⚡4email>
<head>
    <meta charset="utf-8">
    <script async src="https://cdn.ampproject.org/v0.js"></script>
    <style amp4email-boilerplate>body{visibility:hidden}</style>
</head>
<body>
    <h1>Hello! This is your AMP-powered email content.</h1>
</body>
</html>';

// 拼接完整的邮件内容
$message = "--{$mimeBoundary}\r\n";
$message .= "Content-Type: text/plain; charset=utf-8\r\n";
$message .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$message .= $plainTextContent . "\r\n\r\n";

$message .= "--{$mimeBoundary}\r\n";
$message .= "Content-Type: text/html; charset=utf-8\r\n";
$message .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$message .= $regularHtmlContent . "\r\n\r\n";

$message .= "--{$mimeBoundary}\r\n";
$message .= "Content-Type: text/x-amp-html; charset=utf-8\r\n";
$message .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$message .= $ampHtmlContent . "\r\n\r\n";

// 结束MIME边界
$message .= "--{$mimeBoundary}--";

// 发送邮件
if (mail($to, $subject, $message, $headers)) {
    echo 'AMP email sent successfully!';
} else {
    echo 'Failed to send the email.';
}

额外注意事项 #

• 你的AMP内容必须严格遵循AMP for Email规范，比如必须包含<html ⚡4email>标签、加载官方AMP脚本、添加boilerplate样式，否则邮件客户端会拒绝渲染AMP内容。
• 部分邮箱服务商（比如Gmail、Outlook）需要你先验证发件域名并提交AMP邮件使用申请，才能正常显示AMP内容。
• 对于Magento 2的重构，你可以基于PHPMailer的方案，扩展Magento自带的邮件发送类，添加AMP内容的支持逻辑。

内容的提问来源于stack exchange，提问作者Petro Chaikivskyi