Don’t forget to add a fun, relevant call-to-action button to your email. Keep your email subject line short and attention-grabbing. I’m worth the wait 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! Not just a pretty interface Avoid getting marked as spam! Only email people who have agreed to receive emails from you.