"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Not just a pretty interface Don’t forget to add a fun, relevant call-to-action button to your email. Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? Keep your email subject line short and attention-grabbing. My day’s been ok, how’s yours? Try different email subject line styles to find what gets the most opens.