I wish I looked as good as you while waiting Boost your email opens with a punchy subject line. Not just a pretty interface A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a short preview description to encourage people to click on your email. Is anyone even reading this? Opening the door to unlimited creativity… Test, test, and test again! Make sure your email looks good on all devices before you send it out.