A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Boost your email opens with a punchy subject line. 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! Don’t make ‘em yawn! Keep your emails exciting and brief. Generating witty text... [insert fun loading text here] Test, test, and test again! Make sure your email looks good on all devices before you send it out.