We’re very font of you because you’re our type. Get creative with emojis in email subject lines to increase open rates! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Time to get that bread. Don’t forget to add a short preview description to encourage people to click on your email. My day’s been ok, how’s yours? Sit up straight. Keep your email subject line short and attention-grabbing.