Don’t forget to add a fun, relevant call-to-action button to your email. Opening the door to unlimited creativity… One Mississippi, two Mississippi… Is anyone even reading this? Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Keep your email subject line short and attention-grabbing. "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Boost your email opens with a punchy subject line.