Sit up straight. Boost your email opens with a punchy subject line. Don’t forget to add a fun, relevant call-to-action button to your email. I wish I looked as good as you while waiting A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. My day’s been ok, how’s yours? Fighting off robots… Test, test, and test again! Make sure your email looks good on all devices before you send it out.