"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Get creative with emojis in email subject lines to increase open rates! One Mississippi, two Mississippi… A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Try different email subject line styles to find what gets the most opens. Keep your email subject line short and attention-grabbing. Don’t make ‘em yawn! Keep your emails exciting and brief. My day’s been ok, how’s yours?