One Mississippi, two Mississippi… Don’t forget to add a fun, relevant call-to-action button to your email. Let your imagination run wild. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t forget to add a short preview description to encourage people to click on your email. Not just a pretty interface Test, test, and test again! Make sure your email looks good on all devices before you send it out. Feel free to spin in your chair while you wait