I found Stellar OST Viewer when I am looking for info on how to get PST from OST Microsoft Outlook data files format.
Stellar OST Viewer is freeware to read email data of Microsoft Outlook data files in OST format. This OST format formed when you add the Web-based email such as Outlook.com to Microsoft Outlook. This data files format can’t import directly to Microsoft Outlook such as in used on another computer.
Maybe you need Stellar OST Viewer to read just some email in the backup file, so that I usually find in the forums.
Stellar OST Viewer features
- Shows the preview of the mails and every other mail data such as calendar, contacts, notes, etc. appear exactly in the way Microsoft Outlook shows the data.
- Select or Search OST Data file
- Scan the OST file to preview the mails even a corrupt OST file and fetches all the data found.
- Enables finding particular mails after the OST is scanned
- You can save all the individual mails as EML, MSG, RTF, HTML, and PDF format after the OST file is scanned.