"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Keep an eye on your email open rate to analyze and improve performance! One Mississippi, two Mississippi… Don’t forget to add a fun, relevant call-to-action button to your email. Let your imagination run wild. “There are so many beautiful designs to choose from. I feel like a professional when I use it.” - Dr. Oberson Try different email subject line styles to find what gets the most opens. Keep your email subject line short and attention-grabbing.