Sending email with Amazon SES in sandbox

cli-ses_send_email.php

<?php
require_once './sdk.class.php'; // http://aws.amazon.com/sdkforphp/

define('VERIFIED_FROM_EMAIL_ADDRESS', 'from@example.com');
define('VERIFIED_TO_EMAIL_ADDRESS', 'to@example.com');

$ses = new AmazonSES(AWS_KEY, AWS_SECRET_KEY);
var_dump($ses->send_email(VERIFIED_FROM_EMAIL_ADDRESS,
            array('ToAddresses' => VERIFIED_TO_EMAIL_ADDRESS),
            array(
                'Subject' => array('Data' => 'Hello!'),
                'Body' => array('Html' => array('Data' => '<h1>Hello World!</h1><ul><li>foo</li><li>bar</li></ul>')),
                )
            ));