A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Let your imagination run wild. I wish I looked as good as you while waiting Keep your email subject line short and attention-grabbing. [insert fun loading text here] Fighting off robots… Don’t forget to add a short preview description to encourage people to click on your email.