Don’t forget to add a short preview description to encourage people to click on your email. One Mississippi, two Mississippi… Not just a pretty interface Sit up straight. Don’t make ‘em yawn! Keep your emails exciting and brief. Get creative with emojis in email subject lines to increase open rates! Don’t forget to add a fun, relevant call-to-action button to your email. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.