Some mailers include an X-Originating-IP header, allowing a recipient to see the sender's IP address trivially. Gmail does not include that particular header. T

Some mailers include an X-Originating-IP header, allowing a recipient to see the sender's IP address trivially. Gmail does not include that particular header. The headers it does include will simply lead back into the Google network. More on the X-Originating-IP header, from 2001: http://www.wired.com/politics/law/news/2001/06/44567 http://www.wired.com/politics/law/news/2001/06/44567 As for whether or not Gmail reveals your IP address, it depends on who's asking. E.g., we have the recent example of LTC Paula Broadwell.