I have several pst files in Outlook. I wish to import them separately to Thunderbird and keep their contents separate. I know Thunderbird only uses one folder, and then has subfolders. Is there a way to bring in first the main pst contents and put all that in a subfolder, then switch in Outlook to a different pst file, and then import that and put it in a subfolder. And so on, so that I can keep the different sets of emails separate? In Outlook I can put all my household stuff in one pst, all my holiday stuff in another etc etc. I have yet to install Thunderbird and am not quite sure how you can file emails in different categories anyway so I want to sort this out before I go ahead. (I can keep the old Outlook installed and get at the contents that way but it is not really the most convenient.) Thanks in advance for any answers.