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.

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The Science of Email Clicks: The Impact of Responsive Design & Inbox Testing

Whether it’s reading a blog post with your phone, catching up on Twitter with a tablet, or even previewing emails on your watch, the number and types of devices we use to consume content are growing rapidly. In fact, at least 43% of emails are opened on a tablet or smartphone. How does small-screen reading impact subscriber behavior after emails are opened? MailChimp analyzed over 395 million emails during a 6-month period to examine how a user’s preferred device affects email engagement, investigate the impact of responsive design, and find out if testing your emails can increase click rates.

Gmail Continues to Shift the Market Share Landscape

Mobile Gmail apps for both Android and iOS download images automatically and serve them via Google’s caching service. As users update to the new mobile Gmail apps, we’re seeing image caching affect mobile open rates, specifically opens made with the Gmail app on Android. As Gmail open rates rise, there has been a corresponding drop in Android opens. Since January, Android opens have dropped 34%—now representing 8% of opens.