Don’t forget to add a fun, relevant call-to-action button to your email. Time to get that bread. Not just a pretty interface One Mississippi, two Mississippi… Test, test, and test again! Make sure your email looks good on all devices before you send it out. Keep your email subject line short and attention-grabbing. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Let your imagination run wild.