Sit up straight. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Not just a pretty interface Join 4 million members in making awesome marketing content. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a short preview description to encourage people to click on your email. Keep your email subject line short and attention-grabbing. Don’t make ‘em yawn! Keep your emails exciting and brief.