$to = 'alici@mailadresi.com';
$headers  = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=windows-1251' . "\r\n";
$headers .= 'To: ALICI <'.$to.'>' . "\r\n";
$headers .= 'From: GONDEREN <gonderen@siteadi.com>' . "\r\n";
$headers .= 'Reply-To: Reply Mail <gonderen@siteadi.com>' . "\r\n";
$headers .= 'X-Mailer: PHP/' . phpversion() . "\r\n";
$title = 'Mail konusu'; // mail konusu
$message = 'mail icerigi htmlde kullanilabilir';
ini_set('sendmail_from','gonderen@siteadi.com');
mail($to,$title, $message, $headers);