Use OST2PST to convert Outlook OST to EML & PST format in easy steps. OST2PST helps in saving OST in eml so as to re-import the messages into Outlook. Converting OST to PST using OST 2 PST will help users to save your Offline Outlook emails in Ms Outlook email client. Now easily convert OST to PST/EML files with all email items To, Cc, Bcc, From, Sent & Received date, Attachments using OST2PST.exe - OST Converter program.