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