WordPress Pretty Emails is an advanced and highly extend-able email template system for WordPress, There are 6 emails template by default on the plugin so you can select your desired template.
MULTIPLE TEMPLATE SUPPORT
Do you know that using WordPress Pretty Emails you can set different email templates for certain plugins? Isn’t it fantastic?! Imagine that you can set a clean HTML template for WordPress emails, an advanced invoicing email template for your WooCommerce plugin, a newsletter email template for your newsletter and contact form plugins, etc.