Try different email subject line styles to find what gets the most opens. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula [insert fun loading text here] Generating witty text... Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing. Don’t forget to add a fun, relevant call-to-action button to your email. My day’s been ok, how’s yours?