I can't connect via Yandex

If you have problems connecting through your Yandex account, follow these steps:

1. If two-factor authentication is enabled (and even if you have disabled it for third-party apps), you need to get specific passwords - you can do this under "App passwords" on https://passport.yandex.ru/profile/.
   NOTE: Application passwords are required even if two-factor authentication is already disabled.
   
   
2. The password is required for the "Mail (POP3/IMAP, SMTP)" application.
3. Note that you have to enter a password in the IMAP settings.

That's it. You can use Yandex IMAP with App in the Air.