SAN FRANCISCO — Yahoo is spiffing up and expanding its e-mail service in an attempt to regain some of the ground lost to Google.
Changes unveiled Tuesday are meant to make Yahoo e-mail faster and easier to use. To cater to the growing number of people checking e-mail on smartphones and tablet computers, Yahoo also introduced mobile apps for the iPhone, iPad, and devices powered by Microsoft’s Windows 8 system.
The overhaul is part of chief executive Marissa Mayer’s crusade to give people more reasons to visit the company’s online services. She hopes to sell more advertising and accelerate revenue growth after years of malaise that have kept shares below $20 for more than four years. The stock has surged 25 percent since Yahoo hired Mayer from Google nearly five months ago.