If you really wanted to, you could get a person in a lot of trouble for spamming your email address. All you have to do is turn in their information to the concern government agencies and they will handle the rest.
Reverse email lookups are also a great and easy option to find out if there is any infidelity going on in your relationship. Many people will communicate through email because they do not have a fear of getting caught. With this service you are easily able to locate and pinpoint exactly who your spouse has been talking to.
Another great way to use this service is to track down an old friend you may have lost contact with. All you have to do to be able to use this feature is put in the email address you think that is malicious into the search box provided. In just a few moments you will be given reliable information such as a name, address, phone number, IP address and various other pieces of information.
Just don't fall for the sites that claim to do reverse email searches for free. This is nothing but than a form flashy advertisement to get you to visit their site. You will always be asked to pay a fee before they will give you the information you requested.