Trying to input all my email/ folders from MS Outlook 2011 (Mac) to Thunderbird. Have used Emailchemy to export the data from Outlook to a mbox format. When I used Tool > import, it only gives me Apple Mail as an option. Tried it, nothing to import. There was no other options, no way to select a different folder. Then added the ImportExportTool add-on. That helped somewhat. It would allow me to select all files with .mbox but not any of the folders. I have many folders. Some folders have multiple layers of folders. I am using a MacBook Pro, running High Sierra (Mac OS 10.13.2), I have downloaded the most recent version on Thunderbird (52.5.2). Any suggestions/ ideas would be greatly appreciated. Thanks.