In this Sketch and HTML tutorial, you'll learn how to create a responsive email template. With the explosion of mobile devices, you'll never know when someone is opening an email on their desktop or on their mobile device. You need to be prepared with a responsive design that works no matter where it's displayed. By the end of this Sketch and HTML training, you'll have followed along with a production process that includes different stages for approvals, implementation and testing, all to learn the best practices for creating a responsive email template by designing in Sketch and coding in HTML. Software required: Sketch 3, Brackets 1.4, web browser.