51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Boost your email opens with a punchy subject line. A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. [insert fun loading text here] Try different email subject line styles to find what gets the most opens. Sit up straight. Don’t forget to add a fun, relevant call-to-action button to your email. Fighting off robots…