I have Microsoft Outlook 2007 installed and use IMAP for all my mail accounts. When I updated to Windows 7 I had to reinstall Outlook and thus download all the headers again. I ended up downloading everything again, but I would want to prevent this in the future.
Is there a way to import my Microsoft Office Outlook Personal Folders (.pst) or Offline Folder (.ost) files into the new installation, so I don't have to download all the headers again?
Edit: I checked the extension of the files in my current Outlook folder, which are .pst files, is it possible Outlook changed them to .ost files when I was messing around with my Outlook settings? I've changed my question to import .pst or .ost.
Edit2: I tried exactly that and even made sure they had the correct name, but then Outlook would crash on me. I guess there is more to it than just the file names... I also tried some programs to restore .ost files, which actually managed to get files out if it, but also tried to empty my wallet... I'm hoping for a kick-ass hacky way to get it working anyway!