Hello,
The HikaShop "order creation" email and the HikaMarket "user order notification" email are very similar.
It's in the "preload" that you want to perform your customizations and change the "footer" part.
You'll find :
$templates['ORDER_FOOTER'] = $cartFooters;
So each entry added in the variable array $cartFooters, will be displayed in the email HTML afterwards.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.