Sit up straight. 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. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Not just a pretty interface 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. Test, test, and test again! Make sure your email looks good on all devices before you send it out.