Get creative with emojis in email subject lines to increase open rates! Is anyone even reading this? I wish I looked as good as you while waiting Don’t forget to add a short preview description to encourage people to click on your email. Want the loading time to be longer so we can spend more time together :) One Mississippi, two Mississippi… 51% of emails are opened on mobile devices - don’t forget to check the mobile preview for your email! A mobile-responsive email can increase clicks by 15%. Always check mobile previews before sending out emails.