emailradar.com idea started with me when I changed my job in NYC some time ago (and changed my email as well!). I lost contact with some of my friends and business contacts although my former company kindly kept forwarding my emails for a while to my new address. Therefore, I thought that such a problem was encountered by many people in the world and I decided to establish emailradar.com.  I designed and programmed it in a way that almost no human interaction is needed for an up and running system; since the operational cost is negligible, using the service is free.  Enjoy it..

Regards..
M.C.