<? 
$g_mail = "mail@domain.com"; 
$s_name = "Some name"; 
$to = "Receiver <receiver@domain.com>";    
$subject = "Some subject";  
$message= "HTML codes here. Write anything you want including " . $_POST['data']; 
$header = "From: $s_name <".$g_mail.">\n";  
$header .= "Reply-To: $s_name <".$g_mail.">\n"; 
$header .= "Return-Path: $s_name <".$g_mail.">\n";   
$header .= "Delivered-to:  $s_name <".$g_mail.">\n"; 
$header .= "Date: ".date(r)."\n"; 
$header .= "Content-Type: text/html; charset=iso-8859-9\n";    
$header .= "MIME-Version: 1.0\n"; 
$header .= "Importance: Normal\n"; 
$header .= "X-Sender: $s_name <".$g_mail.">\n";    
$header .= "X-Priority: 3\n";    
$header .= "X-MSMail-Priority: Normal\n"; 
$header .= "X-Mailer: Microsoft Office Outlook, Build 11.0.5510\n"; 
$header .= "X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2869\n"; 
mail($to, $subject, $message, $header); 
?>
これは、私が通常使用するメール スクリプトです。ほとんどのメール プロバイダーでもスパムとしてマークされません。