Hi,
Using HikaShop Business you can edit and customize the emails.
In the "preload" part of the email you can add your PHP code and interact with the HikaShop email process.
Thanks to that, you can change the HTML template which is used or just fill variables that you can use afterwards in the HTML email (using tags).
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.