How To Send a Hidden Version of Your Email That Only Apple Watch Will See

Litmus user Dan Foody has discovered something very exciting about the Apple Watch. There’s a way to send a hidden version of your email campaign that only the Apple Watch will display. This gives you a lot more flexibility in your design. In this post, we’ll cover how to introduce a third part into your HTML email: text/watch-html, as well as tips on how to make it look great.