A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Feel free to spin in your chair while you wait Is anyone even reading this? Let your imagination run wild. Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Not just a pretty interface Keep your email subject line short and attention-grabbing. Don’t forget to add a fun, relevant call-to-action button to your email.