Keep your email subject line short and attention-grabbing. Keep an eye on your email open rate to analyze and improve performance! "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula We’re very font of you because you’re our type. Try different email subject line styles to find what gets the most opens. Sit up straight. Get creative with emojis in email subject lines to increase open rates! Let your imagination run wild.