EML PST - Version 5.7 Give a try to EML PST Converter to convert Windows mail, Windows Live mail & Outlook Express EML files into Outlook PST file. Now there is a batch conversion mode in the software to convert batch EML files to PST in single conversion cycle. Using EML PST Converter, users can preserve all elements of EML files such as - email headers (To, From, CC, Body, Return Path,), attachments. HTML formatting, RTF formatting.