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! Test, test, and test again! Make sure your email looks good on all devices before you send it out. Don’t make ‘em yawn! Keep your emails exciting and brief. [insert fun loading text here] Keep an eye on your email open rate to analyze and improve performance! Sit up straight.