Hello there,
Good Day!!!
Thank you so much for your wonderful review, it means a lot to us.
Regarding your requested feature which can be easily achievable.
We use WooCommerce Email Template Core Function to send email. If you want to set the appearance of the email/logo, you can do it in the following settings.
Admin Dashboard -> WooCommerce -> Settings -> Emails -> Scroll to the bottom of the page (in there you can change the appearance like color/bg/logo). Please note that the changes will reflect all email of woocommerce as well.
Let us know.
Thanks.