Sit up straight. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Don’t make ‘em yawn! Keep your emails exciting and brief. One Mississippi, two Mississippi… Keep an eye on your email open rate to analyze and improve performance! Opening the door to unlimited creativity… Don’t forget to add a fun, relevant call-to-action button to your email. Try different email subject line styles to find what gets the most opens.