PHP邮件：所有邮件都在SPAM文件夹中收到 [英] PHP mail: All emails are received in the SPAM folder
问题描述
我正在制作一个简单的PHP邮件发件人，以一次将图像发送到多个地址。不知道为什么，但电子邮件不断到达SPAM文件夹，无论我发送什么邮件管理器...
I'm making a simple PHP mail sender to send an image to multiple addresses at a time. Don't know why, but the emails keep on arriving at the SPAM folder, no matter what email manager I send them...
这是我如何调用PHP邮件发件人文件：
Here's how I call the PHP mail sender file:
$.ajax({ url: 'mail_sender.php?receiver=' + receiver + '&=lang' + lang,
success: function (response)
{
console.log('Mails ' + response);
}
});
这是我的PHP文件结构：
And this is my PHP file structure:
<?php
// Reciever
$_to = $_GET["receiver"];
$_lang = $_GET["lang"];
// subject
$subject = 'My Subject';
// sender
$sender = "sender@sender.es";
// message
$message = '
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<head>
<META name="generator" content="HTML Tidy for Linux/x86 (vers 25 March 2009), see www.w3.org">
<TITLE></TITLE>
<META http-equiv="Content-Type" content="text/html; charset=us-ascii">
</head>
<body>
<img src='."https://www.mysite.es/demo/img/emails/imagen_".$_lang.".jpg".' />
</body>
</html>
';
// To send HTML mail, the Content-type header must be set
$headers = "Reply-To: <sender@sender.es> \r\n";
$headers .= "Return-Path: <sender@sender.es>" . "\r\n";
$headers .= "From: <sender@sender.es>" . "\r\n";
$headers .= "Organization: My organization" . "\r\n";
$headers .= "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type: text/html; charset=utf-8" . "\r\n";
$headers .= "X-Priority: 3" . "\r\n";
$headers .= "X-Mailer: PHP/". phpversion();
// Mail it
$ret = mail($_to, $subject, $message, $headers);
if ( $ret == '' || $ret )
{
echo $ret;
}else{
echo $ret;
}
?>
任何人都可以提供一些线索？
Can anyone give some clues?
非常感谢！
推荐答案
尝试发送纯文本电子邮件而不是HTML（如果符合您的需要）。根据我的经验，HTML经常触发垃圾邮件过滤器，但是您真的需要使用HTML尝试查看mailchimp使用的一些电子邮件模板。
Try sending a plain text email instead of HTML (if that suits your needs). In my experience the HTML often triggers spam filters but f you really need to use HTML try to look at some of the email templates that mailchimp uses.
https://github.com/mailchimp/Email-Blueprints
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