Keep your email subject line short and attention-grabbing. Keep an eye on your email open rate to analyze and improve performance! "Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula One Mississippi, two Mississippi… 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. Is anyone even reading this? Fighting off robots…