51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Sit up straight. Opening the door to unlimited creativity… [insert fun loading text here] One Mississippi, two Mississippi… A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t make ‘em yawn! Keep your emails exciting and brief. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.