How to import letters from the archive to the server?

Question

Mail server

I have a mail archive from an old server in eml format.
I need to import emails to a new one. At the same time, Thunderbird, for example, allows you to import only to its local database, but I didn’t understand how to upload the archive to the server through it.
They say this can The Bat! but it is paid, I would like a free solution.

Answer 1

The problem of being free is easy to solve - The Bat has a trial period, and even if it is small, it should be enough for any one-time operation. But ... can he upload the mail archive to the server? I did not find such an option in version 6.2. There is export, but only to files like .eml and .msg, there is mail synchronization, but (as I understand it) only with a local archive...