51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Get creative with emojis in email subject lines to increase open rates! Avoid getting marked as spam! Only email people who have agreed to receive emails from you. Don’t forget to add a short preview description to encourage people to click on your email. Test, test, and test again! Make sure your email looks good on all devices before you send it out. Try different email subject line styles to find what gets the most opens. Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing.