Try different email subject line styles to find what gets the most opens. Feel free to spin in your chair while you wait Don’t make ‘em yawn! Keep your emails exciting and brief. Get creative with emojis in email subject lines to increase open rates! Fighting off robots… Test, test, and test again! Make sure your email looks good on all devices before you send it out. Opening the door to unlimited creativity… Keep your email subject line short and attention-grabbing.