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. Keep your email subject line short and attention-grabbing. Fighting off robots… Try different email subject line styles to find what gets the most opens. Don’t make ‘em yawn! Keep your emails exciting and brief. Don’t forget to add a short preview description to encourage people to click on your email.