Test, test, and test again! Make sure your email looks good on all devices before you send it out. Don’t forget to add a fun, relevant call-to-action button to your email. Feel free to spin in your chair while you wait I wish I looked as good as you while waiting One Mississippi, two Mississippi… 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! Keep your email subject line short and attention-grabbing.