One Mississippi, two Mississippi… Feel free to spin in your chair while you wait Keep an eye on your email open rate to analyze and improve performance! Let your imagination run wild. Don’t forget to add a fun, relevant call-to-action button to your email. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Boost your email opens with a punchy subject line. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!