"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Test, test, and test again! Make sure your email looks good on all devices before you send it out. Keep an eye on your email open rate to analyze and improve performance! Fighting off robots… 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. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Don’t make ‘em yawn! Keep your emails exciting and brief.