I’m worth the wait 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t forget to add a fun, relevant call-to-action button to your email. Try different email subject line styles to find what gets the most opens. Don’t forget to add a short preview description to encourage people to click on your email. "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula We’re very font of you because you’re our type. Boost your email opens with a punchy subject line.