I am also having difficulties with EagleFiler. This is y first use of the application and i just want to move some of the e-mails to it as the mail.app seems to be overloaded. I saw that the arhive is mounted as a volume and unfortunatey it's size is 2 GB. When the captured e-mails volume reaches 2 GB, it is not possible to continue the operation as a pop-up window appears and says:
There is an internl error while importing Mailbox
IOError: 28 (No space left on device) for file: None
Any idea how to resolve the issue?