Get creative with emojis in email subject lines to increase open rates! Boost your email opens with a punchy subject line. “PosterMyWall has a variety of different email templates that makes the job a whole lot easier than usual.“ - neokolmann 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. Let your imagination run wild. [insert fun loading text here] Sit up straight.