The updated Yahoo email features "fewer distractions" to users, as they will be able to quickly login, communicate, and get on with their day, Mayer said.
These improvements will be available on Web, Windows 8, iPhone/iPod touch and Android.
"We've redesigned the new version of Yahoo! Mail with speed in mind -- getting through your emails is faster than ever before. We've also made your inbox more intuitive and easier to navigate, allowing you to focus on what matters most: your messages. And, because mobile is everything these days, Yahoo! Mail now has a consistent look and feel across devices," Mayer added.
Yahoo CEO has said she plans to invest in hiring engineers with expertise in mobile applications, boosting the company's technology for buying and serving ads, and building services that are more personalized for individual users.