Not just a pretty interface Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Test, test, and test again! Make sure your email looks good on all devices before you send it out. 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. Generating witty text... A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.