"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. One Mississippi, two Mississippi… Test, test, and test again! Make sure your email looks good on all devices before you send it out. Keep your email subject line short and attention-grabbing. Feel free to spin in your chair while you wait Don’t forget to add a fun, relevant call-to-action button to your email. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.