I wish to change from Windows Live Mail to Thunderbird. To trial this installed two add-ons to Thunderbird - ImportExportTools & add mail manually, both from Kaosmos. This seemed to provide what I needed in my trial run (before Christmas). Unfortunately, I did not get round to doing the job for real until now. However, with upgrades to Thunderbird, neither of these add-ons now work or will install (into a fresh install of Thunderbird 60.5). So how can I now add a complex and large folder structure from WLM (and add accounts manually)? I had both working briefly with version 60 but not now with the latest sub version - are there likely to be any further changes that may correct this problem? Is there any other solution? Any help will be much appreciated. Thank you.