To export Google Workspace emails to Office 365, you can use a third-party migration tool like Advik Google Workspace Backup Tool. First, export your Google Workspace emails to a PST file using the tool. Then, use the Office 365 Import Service to upload the PST file to Office 365. This involves uploading the PST file to the Azure Storage location provided by Microsoft, creating an import job in the Office 365 Security & Compliance Center, and mapping the PST file to the appropriate Office 365 user mailboxes. This method ensures a smooth and efficient migration of emails from Google Workspace to Office 365.