![Email Marketing Benchmarks, 2012 & 2017 [CHART]](http://trends.e-strategyblog.com/wp-content/uploads/2017/12/email-marketing-benchmarks-2012-2017-150x150.gif)
The world of email marketing has changed pretty significantly over the past five years. Where desktop clients like Outlook were once a more important delivery medium, readers of email are now in the thrall of mobile clients and webmail services like Gmail.