Opening the door to unlimited creativity… Not just a pretty interface Don’t forget to add a fun, relevant call-to-action button to your email. Sit up straight. Boost your email opens with a punchy subject line. Try different email subject line styles to find what gets the most opens. Don’t forget to add a short preview description to encourage people to click on your email. Test, test, and test again! Make sure your email looks good on all devices before you send it out.