电子邮件-Gmail警告和垃圾邮件

Question

因此，我正在使用电子邮件作为联系表格。 当有人给我发送电子邮件时，它显示“警告-可疑”，而gmail则认为这是垃圾邮件。 代码如下： 如果有人能帮助我，我将不胜感激。

<?php
if($_POST && isset($_FILES))
{

    $from_email  = $_POST['bazsolino@gmail.com'];  // sender email
    $to_email    = 'bazsolino@gmail.com';    //recipient email 

    //Capture POST data from HTML form and Sanitize them, 
    $sender_name    = filter_var($_POST["sender_name"], FILTER_SANITIZE_STRING); //sender name
    $phone    = filter_var($_POST["phone"], FILTER_SANITIZE_STRING); //phone
    $reply_to_email = filter_var($_POST["sender_email"], FILTER_SANITIZE_STRING); //sender email used in "reply-to" header
    $subject        = filter_var($_POST["subject"], FILTER_SANITIZE_STRING); //get subject from HTML form
    $message        = filter_var($_POST["message"], FILTER_SANITIZE_STRING); //message


    $formcontent=" Feladó neve: $sender_name \n Telefonszám: $phone \n Üzenet: $message";





        $boundary = md5("regga");
        //header
        $headers = "MIME-Version: 1.0\r\n"; 
        $headers .= "From:".$from_email."\r\n"; 
        $headers .= "Reply-To: ".$reply_to_email."" . "\r\n";
        $headers .= "Content-Type: multipart/mixed; boundary = $boundary\r\n\r\n"; 

        //plain text 
        $body = "--$boundary\r\n";
        $body .= "Content-Type: text/plain; charset=UTF-8\r\n";
        $body .= "Content-Transfer-Encoding: base64\r\n\r\n"; 
        $body .= chunk_split(base64_encode($formcontent)); 



    $sentMail = @mail($to_email, $subject, $body, $headers);
    if($sentMail) 
    {       
     echo "Köszönjük, hogy felvetted velünk a kapcsolatot, hamarosan visszajelzünk!" . " -" . "<a href='index' style='text-decoration:none;color:#000;'> Vissza a főoldalra</a>";
    }else{

      die('Could not send mail! Please check your PHP mail configuration.');  
    }

}


?>