Whatever you know about a person, you can, using this information, try to find, or rather, in modern terms, "punch" him information on the Internet. With a high probability, you will find quite a lot of interesting things. At the same time, you do not have to guess passwords, hack social media pages, etc. Even if you have only one e-mail on hand - a mailbox, you will know something about its owner.
The easiest way is to enter the mailbox address into a search engine. If a person for some reason, for some reason, registered on any sites, left his e-mail on the forums, subscribed to messages, you will find him. The user could have forgotten for many years that he, for example, once gave advice on whether to go to a fortune teller, or was in the group "How to lose weight in 5 days", or was selling wooden boards … But the Internet did not forget, saved. Good for you.
Use the capabilities of instant messaging programs: Mail Agent, ISQ or any other where you can search for contacts by mailbox name. To do this, of course, such a program, or better all at once, you need to install on your computer, run it and search for the desired address one by one with their help.
For example, you need to check your mailbox [email protected]. In the window of your agent, find the "Add contact" option and enter the e-mail you are looking for in the search bar. In a second, information will appear, most likely with the name and surname, gender and even age of the person. What else has been written about him, you can find out by clicking on the "Questionnaire". Data from the My World social network will also be shown. Many people in Mir write a lot of information about themselves: marital status, education, place of birth and residence, hobbies, etc. Friends of friends, interests (groups the user is a member of) will also be displayed.