Mailboxes for Eudora 6 are stored in the Mail Folder folder inside the Eudora Folder folder, and they can be dragged from the Finder into EagleFiler. They are not actually in mbox format (for example, the attachments are removed), but the format is close enough that EagleFiler will be able to read most of the messages. Running the mailboxes through Eudora Mailbox Cleaner or Emailchemy before importing them into EagleFiler may produce better results. The .toc files are not mailboxes and should not be imported.