51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Opening the door to unlimited creativity… Get creative with emojis in email subject lines to increase open rates! [insert fun loading text here] Test, test, and test again! Make sure your email looks good on all devices before you send it out. Try different email subject line styles to find what gets the most opens. Sit up straight.