Alternate email addresses
All the addresses you've added can be found on the Email addresses page, along with the following:
Your email aliases (addresses using your username on all Yandex domains are linked to you when you register). Email aliases can't be deleted. For more info about email aliases, see Yandex.Mail Help.
Addresses using your phone number (if you use a phone number as a username).
Alternate email addresses help you restore access to your account. If you forget your password, enter a confirmed email, and we'll send you instructions. Yandex also uses alternate addresses to send notifications about suspicious activity on your account, phone number changes, and other important events.
How to add an email address
Go to the My email addresses page.
Enter your address in the Add a backup address for restoring access field.
Click Add an email address. Yandex will send a confirmation code to this address.
If two-factor authentication is enabled for your account, you will also need to enter a one-time password generated by the Yandex.Key app.
Open the email and click the link or copy the code and paste it into the Enter code from email field.
The code is valid for three hours. If you close the page that you were supposed to enter the code on, go back to the Email addresses page, hold your cursor over the unconfirmed address, and click Confirm.
Once you've entered the code, click Confirm.
To delete an address, hold your cursor over it and click the icon that appears.