Normally IMAP folders are ordered without any subfolders. So Inbox, Drafts, Sent, Junk and Deleted are within the same row/level. At some point in history these folders somehow went underneath my Inbox folder as subfolders! I cannot change these whatever I try. Searched online to no avail. There are no settings in my shared hosting (PLESK) nor my webmail (Roundcube) for changing this: everything seems fixed and nowhere are subfoldering structures available to be set or changed.
What could I try to get all the IMAP folders in one and the same root structure?
Any & all suggestions are welcome! I've donated all my credits to a bounty for tackling this question :)
UPDATE1 courtesy of @ZEE (thanks)
I tried these two great mail programms OperaMail and CrawlMail both showed the EXACT same structure as Mozilla Thunderbird. This rules out any malfunctioning of the Thunderbird. Digging further....
STRANGE INBOX. suffinx on all the subfolders
If I remove them (rename the paths from INBOX.Drafts to Drafts, then nothing changes! After restart they paths are back again with the INBOX. suffix. Crazy control freakish IMAP stuff!
What else could I try to change in this last diagram in Thunderbird?
UPDATE2: courtesy of @harrymc (thanks)
Currently trying your steps... todo: 1. trying a fresh new mailaccount, see if the subfoders are gone there if so move everything to there. 2. reading bugreport1 3. reading bugreport2
Adding (creating) a BRAND NEW account in Parallels PLESK (shared hosting) default normal settings (emailadderss, antivirus off, storage unilimited, spam filter off, password and thats it there are no more options!) and then configuring it as IMPA account in Thunderbird with all default settings the folder structure was automatically created AGAIN with the subfolders?!? wtf?? Does this mean its a problem of PLESK and not Thuderbird/mailprogram at this point?
UPDATE3: courtesy of @Alexandr Kovalchuk thanks
Even after unchecking the "Allow server to override namespace" setting still the folder structure remains subfoldered. Restarting Thunderbird shows no changes whatsoever! Sigh...
UPDATE 4: courtesy of @Alexandr Kovalchuk (thanks!)
Adding INBOX exactly as you said solved it. Must restart client and unsubscribe and re subscribe. This made all folders go into one root level.











