Ok for reference if anyone is trying to get this working in x-cart for Trustpilot here is what I did (what was said above does work but will send to trustpilot regardless of the order status: Queued, processed, failed, not finished etc etc.
To get it working only when the order is complete you need to do the following:
Inside of root:
include/func/func.mail.php
Code:
$myBcc = ( strpos($mail_message, '<!-- ORDER COMPLETE -->')===false ) ? '' : "Bcc: YOUR_ID@trustpilotservice.com".$lend;
$headers = "From: ".$company_mail_from.$lend.$myBcc."X-Mailer: X-Cart".$lend."MIME-Version: 1.0".$lend.$message_header;
Then because TrustPilot require the email of the customer in the body I added the following code to
skin1/mail/html/order_customer_complete.tpl
At the top of the file I added:
Code:
<!-- ORDER COMPLETE -->
And then just after the customers name:
Code:
<br />
Email: {$customer.email},
<br />
Hope this is useful to others, maybe could be better but works well for me.