Best and reliable software ZOOK EML to MBOX Converter is the most reliable and easy to use tool which allows users to convert/export EML files into MBOX format along with complete mailbox data, attachments, notes and all other items. It has simple interface which provide direct option to convert single or multiple EML files to MBOX format in one go. It is fully suitable to EML files of all major email clients like Windows Live Mail, Windows Mail, Outlook Express and many others.