1. Log in to your Yandex account.
2. Click on your profile picture in the upper-right corner of the screen.
3. Select “Account Management” from the drop-down menu.
4. Click on “Security” in the left-hand menu.
5. Scroll down to the “Application passwords” section and click “Generate password.”
6. Enter a name for your password (e.g., “Mail app”).
7. Click “Generate.”
8. Copy the generated password and use it in place of your regular Yandex password when setting up your app.

Note: You can create a separate app password for each app you use with your Yandex account, and you can revoke any password at any time if you no longer need it.