In a recent report published by ViziSense, Gmail has overtaken Yahoo in India. The total Gmail users in India is now 18,000,000 compared to Yahoo’s 16,800,000.
Yahoo has been the leader so far. However more and more Yahoo users have shifted to Gmail in the last two years. From August 2008, Yahoo users have been decreasing 8% each month where as Gmail users have been increasing 3% each month. In the first week of October Gmail has overtaken Yahoo.
Rediff mail is still 6,250,000 users and ranks third in India. 
However in the global statistics, it will take a few more months before Gmail can take over Yahoo. In the global scenario, Yahoo is still the first while Windows live comes second and Gmail is still the third. However, globally gmail users are growing and unless Live and Yahoo mails introduce any new attractive features, Gmail is set to goto number one.