How to open a .PST file online
No mail account and no extra software to install.
Pick your .PST file
Drag it in or click to choose it. It opens here in a moment.
Read it safely
The message opens in a locked-down view: scripts never run, and remote images often used for tracking stay blocked until you allow them.
Check and save
Download attachments, read the full headers, and see every server the message passed through, with SPF, DKIM and DMARC results.
About .PST files
What a .PST file is, and what's inside it.
A PST file is a Microsoft Outlook database that stores an entire mailbox in one file: emails, contacts, calendar appointments, tasks, and notes. The standard way to open it is Microsoft Outlook (File > Open & Export > Open Outlook Data File). If you do not have Outlook, free standalone PST viewers or the readpst tool let you read one without installing Office. When a PST file will not open, Outlook's built-in ScanPST.exe repairs most corruption.
Programs that open .PST files
| Full name | Outlook Personal Storage Table |
|---|---|
| Developer | Microsoft |
| First released | 1997 (with Microsoft Outlook 97); modern Unicode PST format since Outlook 2003 |
| Category | |
| MIME type | application/vnd.ms-outlook |
| Signature | 21 42 44 4E "!BDN" - Outlook PST/OST file header |
Related viewers
Open the attachments you find.
Is it safe to open a suspicious .PST file here?
Safer than in a mail client: the message runs in an isolated frame with scripts disabled, remote images and trackers are blocked until you allow them, and attachments are never opened automatically.
How can I tell if an e-mail is fake?
Look at the Message info panel. We show the SPF, DKIM and DMARC results recorded by the receiving server, warn you when the Reply-To address differs from the sender, and list every server the message passed through.
Can I open a Gmail or Thunderbird mailbox (.mbox)?
Yes. Drop the .mbox file and you'll get a searchable list of every message. Click one to read it.
Why does my MSG file show plain text only?
Some Outlook messages store their formatting only as compressed RTF. We show the text today; full RTF formatting is coming soon.
Can I open .pst or .ost files?
Not yet. Outlook data files are on our roadmap. Meanwhile you can export single messages from Outlook as .msg and open them here.
Was this tool helpful?
Your rating helps us decide which tools to improve next.