For a reliable migration of EML Files into MBOX Layout is that to use a third party superior ZOOK EML to MBOX Converter. It lets you export a couple of EML files into MBOX Format via the use of the Batch mode. It is so advanced software which could export multiple EML email messages and their corresponding attachments into MBOX Layout in few easy steps.It is a 100% safe and secure solution to convert Windows Live Mail to Thunderbird in few moments.

Check for more details at: Convert Windows Live Mail to Thunderbird