Mail servers addresses for specified address are extracted from DNS. The program tries to connect with found SMTP-servers and simulates sending a message, but does not send the message out. More and more people are finding it interesting to search for people online. Some people have no problem paying nominal fees for reverse email lookup, but others will ask, "Why does reverse email lookup cost money?".Of course, there are free reverse email search options available, but the problem is, the free services only give the Internet community limited access to large databases of public records. Investigative software that can be used to find complete email reverse owner information. This includes owner home address, household members, city, state, and more.