Opening the door to unlimited creativity… Keep your email subject line short and attention-grabbing. Don’t forget to add a short preview description to encourage people to click on your email. I wish I looked as good as you while waiting 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Boost your email opens with a punchy subject line. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Try different email subject line styles to find what gets the most opens.