Don’t forget to add a fun, relevant call-to-action button to your email. Want the loading time to be longer so we can spend more time together :) Get creative with emojis in email subject lines to increase open rates! Keep your email subject line short and attention-grabbing. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Opening the door to unlimited creativity… One Mississippi, two Mississippi… Sit up straight.