Look for information in search engines like Google or Yandex. Include the query in the system "Electronic asidorin". If at least once the specified address has been written in the Internet, the system will issue an identical request information on whom the registered email address.
Write the answer on sent you a message or a letter with a request to respond. After receiving a response, you can see the ip address of the computer that sent the email, what the city owns the ip address. In this case the list of owners of this email address to noticeably decline.
Create a topic or ask in various forums about these letters. Maybe someone already faced with similar newsletters and knows the email address of the sender.
Go to various social networks where you can find information about the owner of a specific email address. Try to search for a network "My world", if the email address is registered to mail.ru. Type in the search the desired address and click "search". If the email address is valid, you will receive complete information on the address owner. You can also find the owner's address on the network Age., if the mail is registered in Yandex. In the same way search for in the "Classmates", "Vkontakte" etc.
Try to search interesting you email address on the website www.nigma.ru. This system is looking for information in several search engines, and then gives it to the General list.
If you are the owner of the account, and you have access to it, go to it. In its settings "In your account" you will be able to find information about a particular email address, as you need to specify an email address.
Use the services of a special services network that can provide information about the owner e-mail upon your request.