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 Is anyone even reading this? Let your imagination run wild. Try different email subject line styles to find what gets the most opens. Test, test, and test again! Make sure your email looks good on all devices before you send it out. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.