One Mississippi, two Mississippi… Get creative with emojis in email subject lines to increase open rates! Sit up straight. "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Keep your email subject line short and attention-grabbing. Don’t make ‘em yawn! Keep your emails exciting and brief. Boost your email opens with a punchy subject line. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula