How does Yandex.Mail connect e-mail and social networks?

Question

Social media

As you know, in the Yandex.Mail interface, against the e-mail with which you correspond, a photo taken from the social network is displayed. Everything seems to be clear - the user registered under this e-mail in the social. networks and Yandex identified him and showed his photo.
But what a funny situation. I received a letter from a very strange e-mail address. Yandex.Mail displayed a link to Odnoklassniki of a real person who cannot have such a strange e-mail.
Question: are there ways to deceive Yandex.Mail in order to substitute a fictitious e-mail and a real account from the social. networks? If so, how?
I would like to understand this issue, or at least hear comments from representatives of Ya.P. Thank you!

Answer 1

oddly enough, but Yandex is often simple (I don’t know how to remake the term "google" under Yandex). Those. just looking for an e-mail with a clarification on the social. networks (including on the social network sites themselves). In general, I personally did not notice any mistakes in the algorithm (and usually when the robot does not have 100% certainty that this is the right person, it displays an avatar from the letters of the name and surname / service name).
PS But often everything turns out to be much simpler. And personally, I would not say with 100% probability that that person does not have this e-mail without asking him personally.
PPS Also, take a look at the source of the letter :)