Test, test, and test again! Make sure your email looks good on all devices before you send it out. Not just a pretty interface I wish I looked as good as you while waiting Feel free to spin in your chair while you wait Let your imagination run wild. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Sit up straight. Don’t forget to add a fun, relevant call-to-action button to your email.