In my TB128.7.0esr I have a Profile with several IMAP-accounts all residing on the same IMAP-server. For ONE of the accounts, when I do a move (drag-and-drop) of an eMail from A to B (ex: from Inbox to Folder or from folder to Inbox or .....) - '''in Thunderbird''' the eMail becomes available in the target, and is removed from the source - '''on the Server directories''' the eMail '''stays in the source''' and is as well in the target and this '''until I do a compact or until I close Thunderbird''' For OTHER accounts everything happens immediately ! I couldn't find any setting that might imply this kind of behaviour And yes, I checked, the icon during the drag-and-drop, it doesn't have the +sign on it, so it's NOT a copy Any ideas what might be going on ?