"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Don’t forget to add a fun, relevant call-to-action button to your email. I’m worth the wait Keep your email subject line short and attention-grabbing. Keep an eye on your email open rate to analyze and improve performance! Boost your email opens with a punchy subject line. Time to get that bread. Try different email subject line styles to find what gets the most opens.