Is the folder that you wish to 'save in' a sub-folder of the account inbox? Is so, you have not really moved the message out of your inbox. Try creating a folder in 'Local Folders' instead. This will move the message outside of the specific named account and place it in a special folder that can be used by all your accounts. If your main account is ever closed, all messages in 'Local Folders' will still be available to Thunderbird. In an IMAP account, this can help to reduce the size of the message store on the server. Don't forget, when you delete a message from any account in Thunderbird, the message is only 'marked' for deletion. It is not physically removed until you 'compact' the folder, a procedure you should perform on a regular basis. TB-38.3 Win10-PC