Thank you for your review. We do appreciate it!
By saying "no hacking required", we meant that the store owner do not need to hack VM files any more in order to edit the emails.
Also, during installation, we are a adding few lines in 3 VM files in order to give the user the ability to edit emails with HTML editor :)
We guarantee that no file is override!
Of course, everything is backed up during installation, and removed when un-installing the component.