Sit up straight. Not just a pretty interface Boost your email opens with a punchy subject line. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Don’t make ‘em yawn! Keep your emails exciting and brief. Opening the door to unlimited creativity… A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a fun, relevant call-to-action button to your email.