If you are searching for the best converter to export data from OST file to EML, you should try the best third-party solution: eSoftTools OST to EML Converter tool. This tool migrates all email into EML like inbox, sent items, draft, notes, journal, task, contacts, appointments etc. this tool supports ANSI and Unicode format. This tool provides multiple formats to convert OST files into PST, EML, OFFICE 365, HTML, EMLX, MSG, MBOX, MSG, vCard, etc. Users can download a free demo file to convert the OST file into 25 each folder of EML.