bloop.email
IMAP settings

Yandex Mail IMAP and SMTP settings

The server settings to add Yandex Mail to any mail app, for addresses ending in @yandex.com, @yandex.ru or @ya.ru.

Incoming mail (IMAP)
Serverimap.yandex.com
Port993
SecuritySSL/TLS
Outgoing mail (SMTP)
Serversmtp.yandex.com
Port465
SecuritySSL/TLS
Sign-in
UsernameYour Yandex login (the part before the @)
PasswordAn app password created in your Yandex ID settings.

From Yandex Help: Setting up other mail clients. Check there if something has changed.

Before you start

Use Yandex Mail in a native Mac app

Bloop.email works with any IMAP account. Enter these settings once, and Yandex Mail sits next to your other inboxes, with trackers blocked and nothing between your Mac and your provider.