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 fun, relevant call-to-action button to your email. One Mississippi, two Mississippi… Try different email subject line styles to find what gets the most opens. Sit up straight. We’re very font of you because you’re our type. Feel free to spin in your chair while you wait Don’t forget to add a short preview description to encourage people to click on your email.