Mandar mail con dos PDF como attach

[Genetix]

Código PHP:

$mailto = $email;
$from_name = "Gustavo";
$from_mail = "[email protected]";
$replyto = $replyto;
$uid = md5(uniqid(time())); 
$subject = 'Your e-mail subject here';
$message = 'Your e-mail message here';
$filename = 'Reporte1.pdf';
$filename2 = 'Reporte2.pdf';
$header = "From: ".$from_name." <".$from_mail.">\r\n";
$header .= "Reply-To: ".$replyto."\r\n";
$header .= "MIME-Version: 1.0\r\n";
$header .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
$header .= "This is a multi-part message in MIME format.\r\n";
$header .= "--".$uid."\r\n";
$header .= "Content-type:text/plain; charset=iso-8859-1\r\n";
$header .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
$header .= $message."\r\n\r\n";
$header .= "--".$uid."\r\n";
$header .= "Content-Type: application/pdf; name=\"".$filename."\"\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n";
$header .= "Content-Disposition: attachment; filename=\"".$filename."\"\r\n\r\n";
 
$header .= "Content-Type: application/pdf; name=\"".$filename2."\"\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n";
$header .= "Content-Disposition: attachment; filename=\"".$filename2."\"\r\n\r\n";
 
$header .= $content."\r\n\r\n";
$header .= "--".$uid."--";
$is_sent = @mail($mailto, $subject, "", $header);
 

prueba eso