Try different email subject line styles to find what gets the most opens. Get creative with emojis in email subject lines to increase open rates! Generating witty text... Test, test, and test again! Make sure your email looks good on all devices before you send it out. Keep your email subject line short and attention-grabbing. Keep an eye on your email open rate to analyze and improve performance! One Mississippi, two Mississippi… Don’t make ‘em yawn! Keep your emails exciting and brief.