Hacker News Reader

gmail reveals the sender's IP address only when sending mail via (authenticated) SMTP. The IP address is hidden when sending mail via the web interface.

I sent it using gmail's web interface. My IP address shows up in "X-Originating-IP" part of header

I don't see my IP in the headers of mail sent from GMail, either. I also tried sending via my phone and got the same results.

Been trying to figure that out for ages... if there really is a way that would be huge.