Export archived mails to IMAP server

[TheZoker]

Since this app can already pull emails from a certain mailbox, it would be nice to also be able to push emails into another mailbox. This way mailboxes could be transferred from one server to another with the added bonus to make a backup of them / archiving them along the way.
Would be nice, if the export could keep folders (e.g. sent to sent, junk to junk etc.). Or even allow to custom pair folders (e.g. old-folder to new-folder).

Something similar to this application:
https://www.mailstore.com/en/products/mailstore-home/

Maybe this is out of scope for the application, but would be an amazing feature! Thanks