[ubuntu] How to migrate from Apple Mail (Mountain Lion) to Thunderbird 17?

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http://ubuntuforums.org – Hi everyone, I have been using Apple Mail for a while now, I have several accounts set up and also many folders. I would like to migrate everything to Thunderbird. So I thought I would do the following: - Install Thunderbird on Mac- Migrate everything from Apple Mail to Thunderbird on Mac- Export everything from Thunderbird on Mac- Import to Thunderbird on Ubuntu First obstacle: - Thunderbird Import feature tells me it could not find any folders to import from Apple Mail. After some reading, it seems that Apple changed the way the .mbox folders work. Anyone run into (Hardware)