Sit up straight. Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? Boost your email opens with a punchy subject line. 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 Keep your email subject line short and attention-grabbing. Don’t forget to add a fun, relevant call-to-action button to your email.