How to transfer GMAIL (G-Suite) corporate mail to Yandex (Yandex.connect)?

Question

Google Workspace

Good afternoon,

I don’t rummage about the issue at all, so I ask kind people to help with advice.
Given:
Domain mail connected to the G-Suite service (corporate mail on GMAIL) - 8 mailboxes
Task:
Transfer all data (letters and files) of 8 mailboxes to Yandex mail.
Problem:
No experience, I'm afraid that data or letters will be lost.

Answer 1

via IMAP
while mx will switch (48 hours), it will come to both