If you know the name and surname of a person, and from this data you need to find his email address, you can use various techniques to achieve success.
Refer to popular social networks such as "My World", "Odnoklassniki", "Vkontakte", etc. To search, you will need to register on the site. Perhaps the person you are interested in is a registered user of one of these networks. However, there is no one hundred percent guarantee that on one of the listed resources he provided the data you are interested in in clear text, just as there is no such confidence in the opposite.
Visit the Internet resource "My Circle" and others like it. There, an e-mail address is a prerequisite for communicating with other users.
Try to find a person's email address using a search engine. Enter the data you know, search. If the wanted person somewhere on the Internet laid out contact information for open access, they will become known to you.
If the above tips did not work, but you know where the person you are interested in studied, try referring to the website of this educational institution, in the section “Our graduates of different years”. Some people provide their contact information there.
If the person whose e-mail you are looking for is still studying at the university, contact the dean's office for information. If it already works, and you know in which organization, try to find the email address in the HR department. Motivate your interest with the urgent need to convey important material.
Ask the person whose address you are looking for to send you an e-mail, in this case his e-mail will be visible in the window of your mail program. This option is convenient if you have other ways to contact, but it is not possible to ask the e-mail directly for some reason (for example, from a girl you liked).
If the person whose email address you are interested in is an official person, perhaps he has a personal website with the information you need in the "Contacts" section.