Keep your email subject line short and attention-grabbing. Don’t forget to add a fun, relevant call-to-action button to your email. Keep an eye on your email open rate to analyze and improve performance! One Mississippi, two Mississippi… Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Sit up straight. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Let your imagination run wild.