Import from Outlook to Zoe

Ok. I'm going insane. I have over 4 years of emails, all in Outlook's .pst format.

I would like to export these to Zoe.

I've tried sending an email to zoe, containing the emails as attachments. I've sent the email in 'plain text' and 'rich text' formats. The email get to Zoe fine, but it doesn't appear to be adding the emails to the database.

Because I have so many of these emails, I'd prefer to use the mbox import capabilites, but I can't find anything that can convert to mbox format.

Anyone have any ideas? Mozilla doesn't work for me, BTW, because it only imports those files you have open in Outlook, and it's awfully slow.