I recently found out that people can look up your IP address through your email which I'm not comfortable with. So from now on I've decided to send emails through my phone only using Sprint's network instead of wifi. I'm wondering if people will still be able to look up any information on my location, even if it's vague. Also I've heard of using proxy servers and VPN networks. Will these really work? And do I need to use them constantly or only when I'm sending the email?