Let your imagination run wild. My day’s been ok, how’s yours? Don’t forget to add a fun, relevant call-to-action button to your email. Get creative with emojis in email subject lines to increase open rates! Sit up straight. Don’t forget to add a short preview description to encourage people to click on your email. Don’t make ‘em yawn! Keep your emails exciting and brief. Keep your email subject line short and attention-grabbing.