@Geneva - Thanks for the question and using MS Q&A platform.
Microsoft Purview eDiscovery to search and export data across various data sources, including Exchange Online mailboxes. With Microsoft Purview eDiscovery, you can search for content in Exchange Online mailboxes, SharePoint Online sites, and OneDrive for Business accounts. You can use keywords, queries, and conditions to search for specific content, and then export the search results to a PST file or a CSV file.
To use Microsoft Purview eDiscovery, you need to have the appropriate permissions and licenses. You can assign permissions to specific users or groups to perform eDiscovery searches and export data.
Please note that Microsoft Purview eDiscovery is a specialized tool designed for legal and compliance purposes. It is not intended for general email search or access.
For more details, refer to Microsoft Purview eDiscovery solutions.
Hope this helps. Do let us know if you any further queries.