Avoid getting marked as spam! Only email people who have agreed to receive emails from you. 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. Let your imagination run wild. Get creative with emojis in email subject lines to increase open rates! Not just a pretty interface Sit up straight. Boost your email opens with a punchy subject line.