<p>On May 29 this year, Gmail introduced the new tabbed layout. For many email marketers this was a major concern as this raised questions on the effectiveness and ROI of their email marketing activities.</p><p>Would the introduction of this new layout affect their open rates? Does this mean email marketing just got a lot harder?</p><p>Let's have a look at what this means for email marketers. The tabbed layout of Gmail's inbox</p><p>If you've got no clue about what I'm talking about, let me give you a quick update. Google introduced a new 'tabbed' inbox that allows users to enable up to five tabs (Primary, Social, Promotions, Updates, and Forums) into which Gmail pre-sorts incoming messages, making it look like this:</p><p><a href="http://econsultancy.com/uk/blog/63569-the-effect-of-gmail-tabs-on-email-marketing">Keep reading...</a></p>