Here is the part of your translation file to edit if you want to edit some part of your email through the starter version :
;email content
ORDER_STATUS_NOTIFICATION_SUBJECT="Your order No. %s is now %s at %s"
ORDER_CREATION_NOTIFICATION_SUBJECT="Your order No. %s is now %s at %s"
ORDER_NOTIFICATION_SUBJECT="Your order No. %s at %s"
USER_ACCOUNT_SUBJECT="Account details for %s at %s"
CRON_REPORT_SUBJECT="Your cron has been triggered"
DATE_ON_WEBSITE="The %s at %s"
ORDER_STATUS_CHANGED_TO="The status of your order No. %s has been changed to %s."
HI_CUSTOMER="Hi %s,"
ORDER_CREATION_SUCCESS_ON_WEBSITE_AT_DATE="We are pleased to confirm the creation of your order No. %s at %s on the %s at %s"
YOUR_ORDER="Your order"
SUMMARY_OF_YOUR_ORDER="Summary of your order"
TOTAL_WITHOUT_VAT="TOTAL without VAT : %s"
TOTAL_WITH_VAT="TOTAL with VAT : %s"
ORDER_TOTAL_WITHOUT_VAT="TOTAL without VAT"
ORDER_TOTAL_WITH_VAT="TOTAL with VAT"
ORDER_VALID_AFTER_PAYMENT="Your order will be processed as soon as your payment is received."
THANK_YOU_FOR_YOUR_ORDER="Once again, thank you for your order at %s. We hope to see you again soon."
THANK_YOU_FOR_YOUR_ORDER_BEGIN="Thank you for your order at %s."
THANK_YOU_FOR_REGISTERING="Thank you for registering at %s."
ACCOUNT_MUST_BE_ACTIVATED="Your account must be activated by clicking on the link below. You will then be able to continue your order."
YOU_CAN_LOG_IN_WITH="You can log in the website with the following username and password."
BEST_REGARDS_CUSTOMER="Best regards,<br/>%s"
NEW_ORDER_SUBJECT="New order No. %s created on %s"
HIKASHOP_MAIL_HEADER="If you don't see this email properly, click here to see your order details"
Here is another
thread
talking about this :
The confirmation email sent to the user after the payment can be changed via the menu System->Emails in the Business edition.
However, if you just want to add some text, you could also override the translation of some of the text of the email via the translation override mechanism:
www.hikashop.com/en/download/languages.html#modify