Not just a pretty interface Feel free to spin in your chair while you wait Keep your email subject line short and attention-grabbing. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Get creative with emojis in email subject lines to increase open rates! Test, test, and test again! Make sure your email looks good on all devices before you send it out. Time to get that bread. Don’t forget to add a short preview description to encourage people to click on your email.