51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Opening the door to unlimited creativity… Get creative with emojis in email subject lines to increase open rates! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Fighting off robots… Generating witty text... Is anyone even reading this? Test, test, and test again! Make sure your email looks good on all devices before you send it out.