Cacher is the code snippet organizer for pro developers

<?php
/** Order email Send
 * @link https://www.steve-berrill.com/
 * @author Steve Berrill, http://www.steve-berrill.com/
 * @copyright 2017 Steve Berrill
 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
 * @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
 * @version 1.0.0
 */

// gain access to magento
error_reporting( E_ALL );
require_once "app/Mage.php";
Mage::app('admin');

// set order id
$orderId = '10000000';
$customEmail = 'your-email';

try {
	// send order email
	$order = Mage::getModel('sales/order')->loadByIncrementId($orderId);
	// check if oirder id exists
	if ($order->getId()) {
		$order->setCustomerEmail($customEmail);
		$order->sendNewOrderEmail();
		echo "Order #$orderId successfully sent to $customEmail";
		//print_r($order->debug());
	} else {
		// if no order id was found
		echo "Order #$orderId not found\n";
	}

} catch (Exception $e) {
	echo 'Caught exception: ',  $e->getMessage(), "\n";
}