Facebook is preparing to unveil a new Web-based e-mail service on Monday to take aim at Google's popular Gmail service, according to a report from TechCrunch.
Rumors of a Facebook e-mail client, known internally as Project Titan or the "Gmail killer," have been circulating the blogosphere since February, but according to TechCrunch, the announcement will finally come during a special event Monday at Facebook headquarters.
An e-mail service from Facebook would likely pose a serious challenge to established providers such as Google and Yahoo!, thanks to Facebook's emphasis on re-creating users' offline social networks for the Web.
A Facebook spokesman declined to comment on the report.
Google and Facebook have increasingly viewed each other as rivals as consumers' Web habits shift from a search-based form of browsing to filtering content through established social networks. Google has launched several new features this year including Buzz and public profiles that are seen as attempts to attract users who have embraced Facebook.