<?php
/*
 * CONFIGURATION
 */
$host = "SMTP HOST";
$username = "SMTP USERNAME";
$password = "SMTP PASSWORD";
$to = "RECIPIENT OF EMAIL";

 /*
  *
  *
  *
  *
  *
  *
  *
  *
  *
  */

if(empty($_GET)){
    echo'<form method="post" action="whitelist.php?action=send">';
    echo'<input name="username" id="username">';
    echo' <input type="submit" value="Submit">';
    echo'</form>';
}
elseif($_GET['action']=='send'){
    error_reporting(0);
 require_once "Mail.php";

 $from = "Minecraft NZ <admin@minecraft.co.nz>";
 $subject = "Whitelist Application";
 $user = $_POST['username'];
 $body = "The following user has applied to be whitelisted.\n".$user;

 mail($to, $subject, $body);