<p>Yahoo's free email service is becoming a bit more like Google's Gmail as part of its second makeover in less than a year. (Yahoo photo)</p><p>SAN FRANCISCO -- Yahoo's (YHOO) free email service is becoming a bit more like Google's (GOOG) Gmail as part of its second makeover in less than a year.</p><p>The similarities to Gmail probably aren't coincidental. Yahoo CEO Marissa Mayer helped design some of Gmail's features while she was a top executive at Google. Since its debut nearly a decade ago, Gmail has grown into the world's most popular email service.</p><p>Yahoo's redesigned email unveiled Tuesday includes a Gmail-like tool that will thread together emails related to specific topics so they appear as a succession of messages. The "conversation view" has become a widely used email feature since Gmail helped popularize the concept after it embraced the format in 2004.</p><p><a href="http://www.mercurynews.com/business/ci_24264140/yahoo-redesigns-email-service-resemble-gmail">Keep reading...</a></p><p>Read also:</p><p><a href="http://singularityhub.com/2013/10/08/is-gmail-wiretapping-federal-court-considers-how-internet-companies-can-handle-user-data/">Is Gmail Wiretapping? Federal Court Considers How Internet Companies Can ...</a> (Singularity Hub)</p><p><a href="http://www.techhive.com/article/2052826/yahoo-makes-mail-beautiful-to-woo-gmail-users.html">Yahoo makes Mail beautiful to woo Gmail users</a> (TechHive)</p><p><a href="http://gizmodo.com/the-new-yahoo-mail-could-not-look-more-like-gmail-1442430816">The New Yahoo Mail Could Not Look More Like Gmail</a> (Gizmodo)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dILmX2chyJQZalMb49rCq5eSpPgyM&ned=us">129 additional articles.</a></p>