Boost your email opens with a punchy subject line. Let your imagination run wild. My day’s been ok, how’s yours? "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula One Mississippi, two Mississippi… 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Sit up straight. Don’t forget to add a fun, relevant call-to-action button to your email.