Test, test, and test again! Make sure your email looks good on all devices before you send it out. Feel free to spin in your chair while you wait Let your imagination run wild. Time to get that bread. One Mississippi, two Mississippi… Get creative with emojis in email subject lines to increase open rates! Boost your email opens with a punchy subject line. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email!