51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! One Mississippi, two Mississippi… 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 Boost your email opens with a punchy subject line. [insert fun loading text here] Get creative with emojis in email subject lines to increase open rates! Keep your email subject line short and attention-grabbing.