$to = 'alici@mailadresi.com';
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=utf-8' . "\r\n";
$headers .= 'To: ALICI <'.$to.'>' . "\r\n";
$headers .= 'From: GONDEREN <uyelik@siteadi.com>' . "\r\n";
$headers .= 'Reply-To: Reply Mail <uyelik@siteadi.com>' . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion() . "\r\n";
$title = 'Sifremi unuttum'; // mail konusu
$message = 'Mail icerigi k.adiniz sifreni bu gibi.';
ini_set('sendmail_from','uyelik@siteadi.com');
mail($to,$title, $message, $headers);