A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Don’t forget to add a short preview description to encourage people to click on your email. Feel free to spin in your chair while you wait I wish I looked as good as you while waiting Boost your email opens with a punchy subject line. Keep your email subject line short and attention-grabbing. Is anyone even reading this? Don’t forget to add a fun, relevant call-to-action button to your email.