Test, test, and test again! Make sure your email looks good on all devices before you send it out. [insert fun loading text here] Generating witty text... My day’s been ok, how’s yours? I wish I looked as good as you while waiting A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. 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.