Als u op ALT drukt komt er een menu tevoorschijn, dan bij beeld=>mappen waar staan er vinkjes voor?

Gone from where ? a Pop account, an Imap account or 'Local Folders' special account ?

Hvorfra? En Pop-konto, en Imap-konto eller en særlig konto til 'Lokale mapper'?

Thanks for your answer. All maps are checked. I use a POP account. But half of the subfolders remain invisible under the locals folders. E- mails in the visuele folders can no longer deleted or moved. Best regards

In some cases, where there is a longer file path, there seems to be a problem. This may occur when you have a deeper hierarchy - many subfolders in the structure.

Try to rename some top and intermediate folders to a shorter name.

Example: Let's pretend you can see a folder called 'Online Orders' but cannot see some subfolders it contains: 'Online Orders' - rename to 'Orders'

Another example: 'Marks and Spencer' - rename to 'M&S'

Exit Thunderbird wait for background file updates to occur and then restart Thunderbird.

Please lets us know if this workaround got the folders visible again.