I am (soon was I hope) using Opera 7.5 for my browsing AND e-mailing. I want to use another mail client and thus import all my old mails. The trouble is opera does not use the notion of folders. Instead it uses the notion of views. It is using a flat structure of mbox files (I have 700 mbox files!) which does not reflect the view structure. To reflect the structure, Opera maintains its own index in its own format. If I try to import my old mails, they form either just a big folder with hundreds of mails or hundreds of folders with just one mail in it.