Is it possible to transfer domain mail to Yandex and still keep all correspondence?

Question

Yandex

There is a domain mail viewed through The Bat! It is required to abandon this mail client and transfer mail to Yandex. As far as I understand, after the transition, only new letters will appear there, and the old ones will sink into oblivion.
In this connection, the question is: is it possible somehow to upload old letters to Yandex-mail?

Answer 1

If you have not deleted old letters from the server, you can easily send them to a new account via imapsync