When you rename a folder from Outlook the following symptom will occur

  • Folder missing from webmail
  • Mail moved to renamed folders getting deleted from the server


The root cause of these issues lies in the process of renaming folders in Outlook. When a folder is renamed, the folder with the old name becomes unsubscribed or disabled in webmail. As a result, the server is unable to locate the renamed folder, potentially leading to the deletion of emails that were moved into it after renaming the folder.


At present, there is a known problem with Outlook's synchronization of renamed folders with webmail. 


To work around this issue, use an alternative method to rename subfolders of the Inbox. For example, use webmail to rename folders when it's necessary.