Opening the door to unlimited creativity… One Mississippi, two Mississippi… Don’t forget to add a fun, relevant call-to-action button to your email. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Keep an eye on your email open rate to analyze and improve performance! Keep your email subject line short and attention-grabbing. Sit up straight. Don’t make ‘em yawn! Keep your emails exciting and brief.