PHP mail Sending script

if (isset($_POST["submit"])) {
        $name = $_POST['name'];
        $email = $_POST['email'];
        $message = $_POST['message'];
        $from = "Mark Theme Client's Mail";
       $to="emran@gmail.com,";
       $to.="rakib@gmail.com";
       $subject = 'Message from Mark Theme ';
       $body = 'From: '.$name .'<br> E-Mail: '.$email .'<br> Message:<br> ' .$message;
      $status= mail($to, $subject, $body, $from);
if(!$status){

    echo'Failed to send';
}
else{
    echo'Thank You !';
    echo $body;
}
}