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. Opening the door to unlimited creativity… Get creative with emojis in email subject lines to increase open rates! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Sit up straight. Let your imagination run wild. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.