Can outsourcing email hurt journalism?

Steve Henn reports on NPR about a recent move by the New York Times to let Google handle the news organization's email: "This summer, the paper moved all of its reporters onto corporate Gmail accounts. Before the switch, Times emails were stored on servers it owned; now those messages are in Google's digital filing cabinet." Henn raises a question: How strong is Google's committment to protecting reporters — and confidential sources — from government subpoenas?