PST viewer

No. Outlook can set a password on a data file, and there’s no way past it here. Open the file in Outlook with the password, then export an unprotected copy and use that.

A file cut short by a failed copy or a full disk reads as unreadable. Microsoft ships a repair tool, scanpst.exe, in the Outlook install folder. Run it against the file before trying again.

Modern .pst files run to tens of gigabytes, and the whole file has to be read on this machine, so a large archive takes minutes and a lot of memory. Exporting a single folder from Outlook is faster than opening everything.

Plain-text bodies stop at the first 20,000 characters, and a message that runs past that marks where the text ends. HTML messages render in full except in very large archives, where later messages fall back to the same 20,000-character text limit.

No. A .pst can contain mail, calendar items, contacts, and tasks, but only the mail is read here, and nothing sends or edits. Open the file in Outlook when you need the rest.

No. Attachments are listed by name and rough size so you know they exist, but saving one out needs Outlook. Open the .pst there with File → Open & Export → Open Outlook Data File, then open the message and save the attachment.