Yahoo rolls out enhanced e-mail service

US Internet titan Yahoo on Monday is introducing an upgraded free e-mail service with enhancements that include letting people send text messages from computers to mobile telephones.

The improved Yahoo! Mail being rolled out around the world in the coming weeks is the most extensive overhaul of the web-based e-mail service since it was launched a decade ago.

Because the text messaging feature depends on cooperation of mobile phone service providers its debuts are limited for now to India, Canada, the Philippines and the United States.

Yahoo doesn't charge for sending or receiving text messages, but mobile telephone users may be charged fees by carriers that provide their services.

Yahoo is making its upgraded service available to the more than 250 million users of its e-mail as it competes with rivals Google and Microsoft for "eye balls" that can be parlayed into advertising revenues.

Improvements include making the service faster and enabling users to have instant message conversations with people using Microsoft's Windows Live Messenger service. Yahoo will continue to offer its old e-mail platform, dubbed "Classic," for those that don't want to switch to the new program.