A reader asked how to find emails with sensitivity labels. Everyone knows that you can find SharePoint files protected by sensitivity labels, but what about emails? MAPI properties exist that hold details of sensitivity labels. These properties are promoted to Microsoft Search, and this allows features like end-user searching through the Microsoft 365 app and Outlook to work. But the best way to find emails with sensitivity labels is to use a Purview content search.
The need to find SharePoint documents with sensitivity labels might arise during a tenant divestiture to decrypt the documents before the split. As it turns out, searches against the SharePoint InformationProtectionLabelId property is a good way to find the files. After that, the need arises to decrypt the documents, which is where Microsoft Purview eDiscovery (premium) might come in handy.
Sensitivity labels are spreading across Office 365. Now you can search SharePoint Online to find documents with a specific label. And if you make an extra tweak to the search schema, you can find labeled sites too. All of which seems boring and uninteresting until you actually need to do it.
