Google does not disclose the number of accounts at GMail, a free service it launched in April 2004. GMail generates revenue for Google as an automated system displays advertisements linked to the details of emails sent and received.
Google is trying to offer sufficient storage space for GMail users so they do not have erase old messages. It currently allows about 2.7 gigabytes of data space to every user. Lee said it will continue to expand the storage size.
It is also trying to raise its presence in Japan, where more people access the Web using mobile phones than from personal computers. Google this year announced a tie-up with the country's second-biggest wireless operator, KDDI Corp. , to offer search engines on mobile phones.