$yoursite = ‘yoursite’;
$webmaster = ‘yourname’;
$youremail = ‘youremail’;

$subject = "You've been registered at BLAH";
$message = "$name , you were registered at BLAH
   Just login using the info below
    Username: $username
    Password: $password

      See Ya!
    $webmaster";

mail($email, $subject, $message, "From: $yoursite <$youremail>\nX-Mailer:PHP/" . phpversion());