Feel free to spin in your chair while you wait Opening the door to unlimited creativity… 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a fun, relevant call-to-action button to your email. Fighting off robots… Don’t forget to add a short preview description to encourage people to click on your email. Don’t make ‘em yawn! Keep your emails exciting and brief.