One Mississippi, two Mississippi… Test, test, and test again! Make sure your email looks good on all devices before you send it out. "I use PosterMyWall to create flyers for the MANY non-profit organizations that we are involved with!" - Stachia Don’t forget to add a fun, relevant call-to-action button to your email. Let your imagination run wild. Get creative with emojis in email subject lines to increase open rates! Not just a pretty interface Boost your email opens with a punchy subject line.