53% of Emails Opened on Mobile; Outlook Opens Decrease 33%

We’ve been tracking email opens for more than 4 years. And it’s incredible to see how behaviors have changed over time. Mobile email was barely a blip on our radars in 2011, and made up just 8% of email opens. Fast forward to 2014, and nearly half of emails are opened on smartphones and tablets—a 500% increase in four years.