Time to get that bread. Boost your email opens with a punchy subject line. Don’t forget to add a short preview description to encourage people to click on your email. Let your imagination run wild. Try different email subject line styles to find what gets the most opens. Generating witty text... A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Avoid getting marked as spam! Only email people who have agreed to receive emails from you.