Don’t forget to add a short preview description to encourage people to click on your email. Generating witty text... Try different email subject line styles to find what gets the most opens. Opening the door to unlimited creativity… I wish I looked as good as you while waiting Boost your email opens with a punchy subject line. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.