For @yandex.ru, @yandex.com, @ya.ru, @yandex.by, @yandex.kz and other Yandex Mail addresses, Yandex requires mail apps like BlueMail to use a separate app password (пароль приложения), not your normal password.
Steps to Create a Yandex App-Specific Password
- Sign in to Yandex Mail in a web browser.
- Open Settings (Настройки) | Email clients (Почтовые программы): mail.yandex.com.
- Make sure From the imap.yandex.com server via IMAP (С сервера imap.yandex.ru по протоколу IMAP) and App passwords and OAuth tokens (Пароли приложений и OAuth-токены) are selected, and save.
- Open your Yandex ID App passwords (Пароли приложений) page: id.yandex.com.
- Under Create an app password (Создать пароль приложения), select Mail (Почта).
- Enter a name, such as BlueMail, select Next (Далее), and copy the password: Yandex shows it only once.
- In BlueMail, enter this password instead of your normal Yandex password: when you add the account, or for an account already in BlueMail, under Settings | Accounts | [your account] | Update Password.
Yandex says a new app password becomes active in 2 to 3 hours, so retry later if BlueMail refuses it.
Recovering your Yandex account or selecting Log out on all devices (Выйти на всех устройствах) resets all app passwords. If that happens, create a new one.
For more details, see Yandex's own guide: Other mail clients.
If you need any help, contact our support team.