"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. My day’s been ok, how’s yours? Not just a pretty interface Is anyone even reading this? Sit up straight. Keep your email subject line short and attention-grabbing. Don’t forget to add a short preview description to encourage people to click on your email.