Don’t make ‘em yawn! Keep your emails exciting and brief. Try different email subject line styles to find what gets the most opens. 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Sit up straight. Boost your email opens with a punchy subject line. Fighting off robots… [insert fun loading text here] Don’t forget to add a fun, relevant call-to-action button to your email.