To manually
Transfer Outlook Emails to Another Account, you can export emails as a PST file from the source account and import it into the destination account. First, go to File > Open & Export > Import/Export, choose "Export to a file" and save it as a PST. Then, in the new account, use the same Import/Export option to import the PST file. While this method works, it can be tedious, especially with large mailboxes. You may encounter issues like file size limitations, lost folder structures, or incomplete transfers.
For an easier, seamless process, the Migrate Cloud Data
Outlook Backup Tool simplifies the task by transferring entire mailboxes with just a few clicks. It eliminates manual effort and prevents data loss, maintaining folder hierarchies and syncing attachments. This tool supports bulk migration and helps avoid complications, saving you time and ensuring a complete transfer.