Without using Outlook, the user can view the PST file in 2 ways: First convert the PST file to another file format like O365, EML, MSG, and open it in the respective file format. Use the MailsDaddy free PST viewer tool to open and read the PST file in the preview window. The free viewer runs on all Windows OS and generates a clear preview of the mail on the right side of the pane. You can also upgrade the solution and convert the mailbox into various desired file format. For more information visit MailsDaddy website.
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PST File Viewer Free