Want the loading time to be longer so we can spend more time together :) Sit up straight. Let your imagination run wild. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Boost your email opens with a punchy subject line. Try different email subject line styles to find what gets the most opens. One Mississippi, two Mississippi… Don’t forget to add a short preview description to encourage people to click on your email.