"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula 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… Fighting off robots… Sit up straight. Boost your email opens with a punchy subject line. Generating witty text... A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.