Hey Sarah,

Just thought I'd mention we've been playing around with Email Templates for a bit at WooThemes. We have a plugin that allows you to modify all of the WooCommerce Email Templates. It looks remarkably similar to the plugin above. http://www.woothemes.com/products/woocommerce-email-customizer/

And I gave a talk about it at LoopConf: https://www.youtube.com/watch?v=7usuZRBsyk8