CakePHP :使用邮件组件在邮件头添加“List-Unsubscribe”

Question

我是usign cakephp 2.x和使用电子邮件组件发送电子邮件。

我正在尝试在标题中添加列表-取消订阅。

$this->Email->headers = [
'List-Unsubscribe'=>'<mailto:'.$email_from.'?subject=Remove from Mailing List>, <'.$SITEURL.'unsubscribe?em='.$email_to.'>',
'List-Unsubscribe-Post'=>'List-Unsubscribe=One-Click' 
];

现在在电子邮件源中，它显示在X-header中。

X-List-Unsubscribe: <mailto:clients@example.com?subject=Remove from Mailing List>, <http://example.com/unsubscribe?em=xyz@example.com>
X-List-Unsubscribe-Post: List-Unsubscribe=One-Click

但它没有显示取消订阅链接与来自。

我需要在邮件头列表-取消订阅，以避免垃圾邮件。

当我尝试使用$this->Email->additionalParams时，它不会在电子邮件标题中显示列表-取消订阅。

下面是我使用的代码

$send_from = $email_from_name . "<" . $email_from . ">";
$this->Email->sendAs = 'both'; // text / html / both
$this->Email->from = $send_from; 
$this->Email->replyTo = $email_from;
$this->Email->return = $email_from; 
$this->Email->to = $email_to;
$this->Email->delivery = 'smtp';
$this->Email->smtpOptions = ['host'=>$imap_server,'port'=>587,'username'=>$email,'password'=>$password];
$this->Email->subject = $subject;

$this->Email->headers = [
'List-Unsubscribe'=>'<mailto:'.$email_from.'?subject=Remove from Mailing List>, <'.SITEURL.'unsubscribe?em='.$email_to.'>',
'List-Unsubscribe-Post'=>'List-Unsubscribe=One-Click' ];
$this->Email->textMessage = $this->_html_to_text($content);
//$this->Email->delivery = 'debug';
$this->Email->send($content);

Answer 1

电子邮件组件不支持自定义的非X前缀的报头，如果你需要的话，你将不得不使用CakeEmail，它在默认情况下不会给报头加前缀，并要求你在需要的情况下显式地传递前缀的报头。

鉴于，从CakePHP 2的第一个发行版开始，现在可能是您最终放弃它的好时机。

简单明了的例子：

App::uses('CakeEmail', 'Network/Email');

// The transport/connection configuration should probably better be moved into a config file
$Email = new CakeEmail(array(
    'transport' => 'Smtp',
    'host' => $imap_server,
    'port' => 587,
    'username' => $email,
    'password' => $password
));
$Email
    ->emailFormat('both')
    ->template('subscribe')
    ->from($send_from)
    ->replyTo($email_from)
    ->returnPath($email_from)
    ->to($email_to)
    ->subject($subject)
    ->addHeaders(array(
        'List-Unsubscribe' =>
            '<mailto:' . $email_from . '?subject=Remove from Mailing List>, ' .
            '<' . $SITEURL . 'unsubscribe?em=' . $email_to . '>',
        'List-Unsubscribe-Post' => 'List-Unsubscribe=One-Click'
    ))
    ->send($content);

这将需要两个模板，一个用于app/View/Emails/html/subscribe.ctp中的HTML

<?php
// $content contains the data passed to the `send()` method, wrapped to max 998 chars per line
echo $content;

一个用于app/View/Emails/text/subscribe.ctp中的文本，要求您将HTML to text转换到模板中。你可能应该使用，下面的代码只是说明了这个原理：

<?php
echo _html_to_text($content);

另请参阅