Using classic Outlook for Windows in business environments
Hi @Alen_Erased
Welcome to our forum!
If you are using New Outlook, syncing to a new device can only add accounts to the Outlook client as an Exchange type. For the time being, new Outlook doesn't support exporting and importing mailboxes using .pst files.
To import and export files, switch to the classic version and then follow the steps in this article:
Export emails, contacts, and calendar items to Outlook using a .pst file.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.