Users can convert EML files to MBOX in various ways but one of the best eSoftTools  EML to MBOX converter software. Import EML files to MBOX  with security and safety. This software is capable of importing one or more files together. In MBOX file save with proper heading, subject, content, etc. and other options are also available like inbox, outbox, clock and calendar, and many others.

Know more -  Import/convert EML to MBOX