Recently Google announced that its troops serving overseas free GMail phone call back to the U.S. to listen to the voice of family services, as long as around the world. Mil e-mail address to write to the end of the Google GMail account can be realized in the voice and video phone calls, the VoIP service was originally to fight back to the U.S. from overseas need to 2 cents / minute, but for the service of the U.S. at least to the end of the year is free.