"Our charity nursery has improved their event marketing thanks to PosterMyWall flyers!" - Paula Don’t forget to add a fun, relevant call-to-action button to your email. Let your imagination run wild. Opening the door to unlimited creativity… Try different email subject line styles to find what gets the most opens. One Mississippi, two Mississippi… Test, test, and test again! Make sure your email looks good on all devices before you send it out. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.