"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Let your imagination run wild. Get creative with emojis in email subject lines to increase open rates! Don’t forget to add a fun, relevant call-to-action button to your email. Keep an eye on your email open rate to analyze and improve performance! Boost your email opens with a punchy subject line. Opening the door to unlimited creativity… Don’t forget to add a short preview description to encourage people to click on your email.