Open PST files on Mac without Outlook
macOS has no built-in way to open PST files. Outlook for Mac can read them, but installing a full email client just to access an archive is overkill — especially when you may only need to retrieve a handful of emails or a specific attachment. The PST Viewer opens any PST file on your Mac, lets you browse its contents, and saves what you need. Completely free, completely offline, no Outlook required.
What you can do with the PST Viewer on Mac
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Browse folders
Navigate the full folder tree of any PST archive — inbox, sent, subfolders — as it was organised in Outlook.
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Read emails
Open and read individual emails, including HTML-formatted messages and inline images, in a clean Mac interface.
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Save attachments
View and save file attachments from any email in the archive directly to your Mac.
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Search the archive
Search across all emails in a PST file by sender, subject, date, or message content.
Works on Intel and Apple Silicon Macs
The PST Viewer runs natively on both Intel Macs and Apple Silicon (M1, M2, and M3). No Rosetta translation layer is needed. It is a proper Mac application that installs and behaves like any other Mac app.
Common reasons to use the PST Viewer on Mac
Switched from Windows to Mac. You brought a PST archive from your old Windows machine and need to access it occasionally — but you have no intention of installing Outlook for Mac.
Received a PST from a colleague. A contact sent you a PST export containing a project email thread or shared archive. You want to read it without importing everything into your email client.
Verifying a backup. You exported your Outlook data before switching email clients and want to confirm the PST contains what you expect before deleting the source.
Retrieving specific emails. You need one or two specific emails from a large archive. The Viewer lets you find and save them without going through a full migration.
PST Viewer vs converting to Apple Mail or Thunderbird
PST Viewer — open and browse a PST archive in place. No import into any email client. Best when you need occasional access or want to retrieve specific items. Completely free.
PST to Apple Mail Converter — permanently migrate all your Outlook email into Apple Mail on Mac. Best when Apple Mail will be your primary email client going forward.
PST to Thunderbird Converter (Mac) — permanently migrate all your Outlook email into Thunderbird on Mac. Best when Thunderbird will be your primary email client.
Completely free — no licence, no subscription
The PST Viewer for Mac is free to download and free to use. No licence key, no trial period, no feature limitations. It also does not require an account, does not send data anywhere, and does not phone home.
Frequently Asked Questions
Is there a free PST viewer for Mac?
Yes. The PST Viewer is free for Mac — no licence required. It opens, reads and searches PST archives without Outlook.
Can I open a PST file on Mac without Outlook?
Yes. The PST Viewer reads PST files directly on Mac. No Outlook for Mac installation needed.
Does it work on Apple Silicon (M1, M2, M3)?
Yes. The PST Viewer runs natively on Apple Silicon and Intel Macs.
What is the difference between the PST Viewer and the PST to Apple Mail Converter?
The Viewer lets you open and browse a PST file in place. The Converter migrates the entire archive into Apple Mail for ongoing use.
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