Hi there,
First of all, do not hesitate to use the english forum, the translation in english will probably better and your message could be useful to a larger audience.
Ideally, you can post your message in your native language and the english translation
About the email, you can indeed do that kind of customization but you'll need the business version. You can take a look at it on our demo website by logging in the backend and going to Hikashop>Systeme>Emails
It's also possible to do it with th starter version but you have to manually create a specific file.