The Worldwide Email Finder uses the same databases used by the government and law enforcement agencies across the usa. This broad database can be pulled from to help you find a lost friend or any relative you can think of.

The biggest problem with Yahoo People Finder and Yahoo Reverse Email Search is that it is fairly limited in scope. Since it treats the information you enter as simply a Yahoo search engine inquiry, its results are limited to its search engine. It also pulls up potentially hundreds of pages of information that you would have to sift through to find your quarry, and that could take a ton of time, which is not something worth doing if you are doing a background check.

One of the most popular free reverse email search services is Spokeo.com. Founded in 2006, Spokeo.com is a social aggregator website that provides the capability to do a reverse email search on an email address via Spokeo Reverse Email Search . Although Spokeo.com claims to be free, it only shows limited set of results on your email look up. Most of the email search results are kept hidden and the site then asks for you to sign up for paid subscription to get more detailed results.