A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Opening the door to unlimited creativity… Sit up straight. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Get creative with emojis in email subject lines to increase open rates! Fighting off robots… 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.