If somebody sends email to you in your hotmail or gmail or yahoo, you can track senders IP address and there are lots of website from where you can find the location of IP address. If IP address is of USA, you can extract the location but if its from Nepal, you can't find whether it's from Kathmandu or pokhara or something else. They recognize all IPs from Kathmandu.

Let us know and be specific about your recieiving email domain so that we can provide you specific steps to extract IP address.