Pozeljno je poslati sve ove hedere da ne bi mail na yahoo ili drugih odlazio u spam:
$mail_header = '';
$mail_header .= "Reply-To: [email]
[email protected][/email]\r\n";
$mail_header .= "From: user <
[email protected]>\r\n";
$mail_header .= "Return-path: [email]
[email protected][/email]\r\n";
$mail_header .= 'Message-ID: <' . md5(uniqid(time())) . "@domena.tld>\r\n";
$mail_header .= "MIME-Version: 1.0\r\n";
$mail_header .= "Content-type: text/plain; charset=utf-8\r\n";
$mail_header .= 'Date: ' . date('r') . "\r\n";
$mail_header .= "X-Priority: 3\r\n";
$mail_header .= "X-MSMail-Priority: Normal\r\n";
$mail_header .= 'X-Mailer: PHP/' . phpversion() . "\r\n";
mail($to, $predmet, $poruka, $mail_header)