Replace Email Editor for TinyMCE

Hi Guys,

I want to customize the standard emails sent to something more Designed. I thought the best way to get there is to replace the current editor to a tinyMCE editor that allows HTML.

Did you someone already tried something like this? May i create a custom module to override the editor on the admin panel?

Thank you in advance of your tips.

I've not tried that but it would be interesting.