Email Customizer PRO permits full customization of your WooCommerce emails. It has now become easier to customize the components of the email (header, footer formats, adding custom links, changing and customizing colors) with only using the already known WordPress Customizer interface through shortcodes. So being a web developer is no longer a condition to be able to adjust those changes. Moreover, you can even add your own custom css.
Demo: https://codecanyon.net/item/woocommerce-email-customizer-pro/18831495