Sit up straight. Try different email subject line styles to find what gets the most opens. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! I wish I looked as good as you while waiting Keep your email subject line short and attention-grabbing. Boost your email opens with a punchy subject line. Is anyone even reading this?