$to = "xxx";
$subject = "Subject" ;
$message = 'Example message with html';
$headers = 'MIME-Version: 1.0' . "\r\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= 'From: xxx ' . "\r\n";
mail($to,$subject,$message,$headers);