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. Sit up straight. Keep your email subject line short and attention-grabbing. Opening the door to unlimited creativity… Boost your email opens with a punchy subject line. "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!