Try different email subject line styles to find what gets the most opens. I’m worth the wait Keep your email subject line short and attention-grabbing. One Mississippi, two Mississippi… "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Keep an eye on your email open rate to analyze and improve performance! Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Boost your email opens with a punchy subject line.