為什麼我的 PHP `mail()` 函數電子郵件最終會進入垃圾郵件資料夾？

PHP 上郵件函數將電子郵件傳送到垃圾郵件的疑難排解

透過PHP 的郵件() 函數傳送電子郵件時，它們經常會進入垃圾郵件資料夾。要解決這個問題，我們必須了解根本問題。

解決這個問題的關鍵在於mail()函數沒有使用配置良好的SMTP伺服器。例如：

$ticketDetail is an array containing pertinent information for transmission.
sendOwnershipEmail('[email protected]', $ticketDetail);

function sendOwnershipEmail($email, $ticketDetail) {
    $param = new stdClass();
    
    $param->content = "<div>
        <div><b>".$ticketDetail[0]['ticket_number']."</b></div>
<br>
        <div><img  src="%22.%24ticketDetail%5B0%5D%5B" image_path alt="為什麼我的 PHP `mail()` 函數電子郵件最終會進入垃圾郵件資料夾？" ></div>
<br>
        <div>Ticket with ticket number ".$ticketDetail[0]['ticket_number']." has been requested for tranfer from <div></div>
        <div>".$ticketDetail[0]['oldDepartment']." to ".$ticketDetail[0]['newDepartment']." Department <div></div>
      </div>";
    
    $param->sendTo = $email;
    $param->subject = "Request for Department transfer";
    
    sendMailFunction($param);
}

function sendMailFunction($param) {
        $to = $param->sendTo;
        $subject = $param->subject;
        $headers = 'MIME-Version: 1.0' . "\r\n";
        $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
        $headers .= 'From: [email protected]' . "\r\n";
        $message = "" .
               "<meta http-equiv="Content-Language" content="en-us">" .
               "<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">" .
               "" .$param->content.       
               "<br><br>";
    mail($to, $subject, $message, $headers);
}<p><strong>解決方案</strong></p>
<p>SMTP 伺æœ</p>
</div>
</div>

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