Pro tip: I use this to predict how an email will perform before we even send a test. Try it and tell me what you think. A few of my strongest email design principles: 10 words. 1 button. If you cannot explain why you are emailing in 10 words and one clear call to action, stop. Rework it, or split the message and send it over a few days. Accessibility is not optional. Spam filters increasingly factor in accessibility. It is an easy win. Get the basics right, readable fonts, sensible sizes, strong