US Internet titan Yahoo today is coming up with an upgraded free e-mail service with enhancements, which include allowing people send text messages from computers to mobile telephones. The improved Yahoo! Mail will be out around the world in the upcoming weeks is the most wide overhaul of the web-based e-mail service as it was launched a decade ago. Because the text messaging feature rely on cooperation of mobile phone service providers its debuts are quite restricted for now to India, Canada, the Philippines and the United States.