Hi,
1. Yes, you'll have to use the business version to directly edit your email dynamic content through "Hikashop->System->Email", else you can edit your email static content through your language files (available through the all HIkashop version).
2. If you just want to disable your email through the starter version, I think that you'll find your answer
there
:
You would have to edit the hikashop_config table via phpmyadmin and change the entry order_creation_notification.published entry to 0
Hope this will help you

.