如何接收通过PHP mail（）发送的邮件？

Question

我正在使用PHP邮件功能发送邮件，正在发送邮件。但它没有收到。没有代码错误，我已经收到一封邮件。但没有更多...

 $to = 'greenwichnexus@gmail.com';
    $subject = $_POST['subject'];
    $email = $_POST['email']; 
    $name = $_POST['name']; 
    $phone = $_POST['phone'];  
    $list = $_POST['list'];
    $headers = "From: ".$name." <".$email.">\r\n"; 
    $headers .= "Reply-To: ".$email."\r\n"; 
    $headers .= "Contact: ".$phone."\r\n"; 
    $headers .= "Content-type: text/html; charset=iso-8859-1\r\n";

    $message = $headers."<br> <br> ".$_POST['message']."  <br> <br> <br>  Menu List - <br> <br> ".$list;

    'X-Mailer: PHP/' . phpversion();

    $retval = mail($to, $subject, $message, $headers);
    if($retval)//change
    {
        echo "Message sent successfully...";
    }
    else
    {
        echo "Message could not be sent...";
    }