Try different email subject line styles to find what gets the most opens. Don’t forget to add a fun, relevant call-to-action button to your email. "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Is anyone even reading this? One Mississippi, two Mississippi… Fighting off robots… Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing.