Yandex Zen. Reference information
https://browser.yandex.com/help/recommendation/zen.htmlYandex Zen gradually adapts the feed to your interests. It analyzes your interaction with the feed (subscriptions, ratings, blocks), search queries, browser history, and other data about your online preferences. You don't need to worry about privacy because the data is stored in a depersonalized format. As a result, you receive personalized recommendations that include materials from …
Logging in and out - Email. Help - Yandex
https://yandex.com/support/mail/auth.xmlOpening your mailbox You can log in to your mailbox from any device connected to the internet. To do this, type mail.yandex. com into your browser's address bar, enter your Yandex username and password, and click Log in. If you use two-step verification, you need a one-time password generated by the Yandex.Key app to log in. Tip.
Registering - Email. Help - Yandex
https://yandex.com/support/mail/reg.htmlTo access Yandex.Mail, you need a Yandex ID. If you do not have one, complete the following steps: Open the registration page. Enter your name and surname. Create or select a unique username, which you will use to log into Mail and other Yandex services. Attention. You cannot change your username after registration.