dedecms 发送邮件

<?php
require_once 'path/to/PHPMailer/src/PHPMailer.php';
require_once 'path/to/PHPMailer/src/SMTP.php';
require_once 'path/to/PHPMailer/src/Exception.php';

$mail = new PHPMailer\PHPMailer\PHPMailer();
$mail->isSMTP();
$mail->Host = 'smtp.example.com';
$mail->SMTPAuth = true;
$mail->Username = 'your_email@example.com';
$mail->Password = 'your_password';
$mail->SMTPSecure = PHPMailer\PHPMailer\SMTP::SECURE_STARTTLS;
$mail->Port = 587;

$mail->setFrom('from@example.com', 'Mailer');
$mail->addAddress('to@example.com', 'Receiver');

$mail->isHTML(true);
$mail->Subject = 'Here is the subject';
$mail->Body    = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message has been sent';
}
?>