退订广告被任意删除

Question

我正在通过 CRON 作业使用 PHP 和 Mailgun，该作业将电子邮件发送到订阅的电子邮件地址，计划每天运行尽管可能不会每天都有电子邮件排队。

我遇到的问题是，在测试期间运行s 似乎在发送电子邮件之前我拥有的退订宣传语被任意删除。

这是我用来添加退订宣传语的代码：

$email = array(
  'subject' => $row['subject'],
  'body'    => $row['body'] . "\r\n\r\n\r\n\r\n\r\n" . "No longer wish to receive emails from us? You may unsubscribe below. Beware, in unsubscribing, you will miss out on any information we share via email going forward."
);

值得一提的是 $row['subject'] 是一个带有 HTML 标记的字符串。

这是我用来 A) 在发送电子邮件之前执行邮件合并和 B) 实际发送电子邮件的代码。

function send_email($from, $to, $subject, $body) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
    curl_setopt($ch, CURLOPT_USERPWD, 'api:removed for privacy');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
    curl_setopt($ch, CURLOPT_URL, 'https://api.mailgun.net/v3/removed for privacy/messages');
    curl_setopt($ch, CURLOPT_POSTFIELDS, array(
        'from' => $from,
        'to' => $to,
        'subject' => $subject,
        'html' => $body
    ));

    $result = curl_exec($ch);

    curl_close($ch);
    return $result;
}

function mail_merge($text, $agency, $sender, $receiver, $efs) {
  // Replace any mail merger fields from the body
  $text = str_replace('[agency.name]',        $agency['name'],              $text);
  $text = str_replace('[agency.address]',     $agency['address_formatted'], $text);
  $text = str_replace('[agency.phone]',       $agency['phone'],             $text);
  $text = str_replace('[agency.fax]',         $agency['fax'],               $text);
  $text = str_replace('[agency.email]',       $agency['email'],             $text);
  $text = str_replace('[agency.signature]',   $agency['signature'],         $text);
  $text = str_replace('[agency.referral]',    $agency['referral'],          $text);
  $text = str_replace('[sender.firstname]',   $sender['first_name'],        $text);
  $text = str_replace('[sender.lastname]',    $sender['last_name'],         $text);
  $text = str_replace('[sender.email]',       $sender['email'],             $text);
  $text = str_replace('[sender.signature]',   $sender['signature'],         $text);
  $text = str_replace('[receiver.firstname]', $receiver['first_name'],      $text);
  $text = str_replace('[receiver.lastname]',  $receiver['last_name'],       $text);
  $text = str_replace('[receiver.email]',     $receiver['email'],           $text);
  $text = str_replace('[receiver.phone]',     $receiver['phone'],           $text);
  $text = str_replace('[efs.firstname]',      $efs['first_name'],           $text);
  $text = str_replace('[efs.lastname]',       $efs['last_name'],            $text);
  $text = str_replace('[efs.email]',          $efs['email'],                $text);
  $text = str_replace('[efs.phone]',          $efs['phone'],                $text);

  return $text;
}

正如我所提到的，我遇到的情况是一些发送的测试电子邮件不包括附加的新行和退出简介。这是在执行 cURL 请求以通过 Mailgun 的 API 发送电子邮件时可能导致的，还是我在代码中无意中做的事情，只是没有捕捉到？

Answer 1

虽然我一直无法弄清楚为什么广告被任意删除，但我能够通过在 MailGun 中从我的域的控制面板自定义取消订阅模板来解决我的问题：

Domains > [Domain Name] > Tracking Settings > Customize unsubscribe templates

退订广告被任意删除

Unsubscribe blurb arbitrarily being removed

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