I realize the business version of Hikashop has a back-end method of customizing emails. But in another post you mentioned
"Emails are not in views. You can personalize emails via the System->Emails menu if you use the business version of hikashop.
Otherwise, you can find the email files in the folder components/com_hikashop/mail. You can make a copy and add to the name .modified just before .php so that you can modify that copy and you won't loose your changes when you update."
I am not seeing the mail folder under com_hikashop. Has the folder location moved?