Yandex Mail (@yandex.com): Enable IMAP/POP3 + Generate App Password
Yandex Mail (Russia's Google-equivalent, @yandex.com / @yandex.ru / @yandex.kz / @yandex.by — 5+ suffixes) complete setup. Enable IMAP/POP3 first (disabled by default), then generate an app password in Yandex ID to bind to Laifaxin. Essential for China-Russia / Central Asia trade.