Google is creating an information bridge between its influential Internet search engine and its widely used Gmail service in its latest attempt to deliver more personal responses more quickly. The experimental feature unveiled on Wednesday will enable Google's search engine to mine the correspondence stored within a user's Gmail account for any data tied to a search request. For example, a query containing the word "Amazon" would pull emails with shipping information sent by the online retailer.

Google is treading carefully as it hooks Gmail up to its Internet search engine. The new feature initially will be available to 1 million Gmail users who sign up at http://g.co/searchtrial. That's a small fraction of the more than 425 million Gmail accounts that have been set up since Google launched its free email service eight years ago to compete against the offerings from Yahoo Inc. and Microsoft Corp.