A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails. Feel free to spin in your chair while you wait Boost your email opens with a punchy subject line. One Mississippi, two Mississippi… Keep your email subject line short and attention-grabbing. My day’s been ok, how’s yours? 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! Get creative with emojis in email subject lines to increase open rates!