51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Get creative with emojis in email subject lines to increase open rates! Boost your email opens with a punchy subject line. Don’t make ‘em yawn! Keep your emails exciting and brief. [insert fun loading text here] A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Not just a pretty interface Sit up straight.