ini_set("SMTP","localhost");
ini_set("SMTP_PORT","25");
$to=$strTo;
$subject=$strSubject."\r\n";
$strContent="Mail Content here";
$headers="MIME-Version: 1.0\r\n";
$headers.="Content-type: text/html; charset=iso-8859-1\r\n";
$headers.="From: ".$strFrom."\r\n";
mail($to, $subject, $strContent, $headers);