

When new items are created in the Contacts folder or the Recipient Cache folder (a hidden folder under the Contacts folder), related items are created in the PersonMetadata folder. Although the OCM service was deprecated in June 2020, Outlook still uses this folder. The PersonMetadata folder was created and used by Outlook Customer Manager (OCM). If you point to these items, the following information is displayed:

When you create a Search Folder for all mail items in Microsoft Outlook 2019, Outlook 2016, Outlook 2013, or Outlook for Microsoft 365, the folder may include unexpected items that have an empty subject line.
