Use Cases
Search PST Files Without Outlook. Built for eDiscovery.
Upload PST archives from Outlook, Exchange, or Microsoft Purview and search Office 365 email and Teams messages by keyword, custodian, and date range. Export what you find to CSV, PDF, or JSON with metadata intact, ready for review, production, or an ESI protocol.
Where PST Files Come From
If Microsoft 365 can export it, ViewExport can search it.
PST is the standard container for Microsoft email data. It shows up in three places, and all three land on the desk of whoever has to review them.
Microsoft Purview eDiscovery Exports
Purview eDiscovery and Content Search deliver their results as PST packages containing Exchange email and Teams chats. ViewExport opens those exports directly, so review starts the same day.
Outlook & Exchange Archives
Mailboxes exported during offboarding, migrations, and legal holds, whether from Outlook’s export tool or an Exchange PowerShell export. Years of a custodian’s email in one file.
Legal Productions
Opposing counsel and vendors routinely produce email as PST. Open the production, search it, and scope what matters before spending on hosting or platform processing.
Who Uses ViewExport
Review Office 365 Email and Teams Data. With or Without IT Involvement.
For law firms, trial attorneys, and eDiscovery providers, as well as for in-house corporate legal, HR, and IT teams.
Heads of IT & Security
You run the Purview export, and then Legal asks you to find what matters inside it. ViewExport turns that PST into a searchable archive instead of a handoff problem.
Attorneys & Law Firms
Search and cull PST productions before they hit your review platform, and keep small matters out of per-gigabyte hosting entirely. Defensible, fast, and priced like a tool, not a platform.
HR & Operations Leaders
Investigations rarely stay in one channel. Search a former employee’s mailbox and their Slack history side by side, and document what you find.
Email & Teams Together
One Search Across Email and Teams Messages.
A Purview export bundles Exchange email and Teams chats into the same PST files. ViewExport indexes all of it, so one query covers every message a custodian sent, whatever app they sent it in.
- Search by keyword, sender, recipient, and date range.
- Metadata preserved for defensibility and chain of custody.
No Outlook Required
Open PST Files on Mac or Windows. No Office License.
Microsoft’s new Outlook app dropped PST support, and the classic app opens one file at a time with no bulk search. ViewExport reads PST archives directly, and the desktop edition keeps every byte on your own machine.
- Nothing to install in your Microsoft 365 tenant.
- Desktop edition: sensitive mail never leaves your computer.
Priced Like a Tool
Flat Licensing. No Per-Gigabyte Processing Fees.
A 30 GB PST is routine for a single custodian, and per-gigabyte platforms price accordingly. ViewExport is a flat license with a free trial, so scoping a matter doesn’t require a procurement cycle.
- Search and cull before anything reaches per-GB hosting.
- Buy online in minutes, or talk to us for enterprise terms.
What We Do
From raw PST export to reviewable archive in minutes.
Raw PST files can't be keyword-searched, Outlook Classic opens one at a time, and review platforms charge for every gigabyte you process. ViewExport is the practical middle path: real eDiscovery search without platform overhead.
Raw PST files aren't searchable
You cannot keyword-search a .pst the way you can a folder of PDFs. ViewExport indexes the whole archive so you can search it like a mailbox, minus the mailbox.
Outlook wasn't built for review
One file at a time, no bulk search across archives, no export trail. Fine for reading your own mail, slow and undocumented for a legal matter.
Platforms are overkill for many matters
DSARs, HR investigations, and small disputes don’t justify per-GB processing and hosting. Scope in ViewExport first, and escalate to a platform only when the matter warrants it.
Security
Enterprise-Grade Security, Built for Legal Workflows
ViewExport is designed with strict security, access controls, and audit trails to meet your legal, IT, and compliance standards.
Security Controls
Full documentation of our security architecture, access policies, and compliance practices.
Audit-Ready Logging
Every action is logged in detail for audit trails, legal defensibility, and compliance reporting.
Infrastructure
Hosted on secure, encrypted infrastructure with authentication, access control, and uptime protections.
Archive Snapshot Integrity
Static copy of your archive at time of upload, so later edits or deletions don’t obscure what was originally said.
Local-Only Option
The desktop edition processes PST files entirely on your machine, for data that can’t leave your infrastructure.
Privacy Practices
GDPR-aligned policies for how we handle, store, and protect sensitive user and message data.
Testimonials
Trusted by attorneys and IT leaders.
Most customer testimonials are anonymized at their request.
“With ViewExport, we were able to easily work with a very large Slack export and resolve our incident much faster compared to other Slack export solutions. The tool has great functionality with improvements happening on a regular cadence as well as fantastic support from the ViewExport team.”
Matt R, Head of IT
Large Game Studio in California
Name and company redacted for client privacy.
“Glad for ViewExport - in Slack you can't filter easily by date range, which is annoying and not usable for Legal/eDiscovery. And Onna is way too expensive. You guys are perfect.”
Chief Information Officer
NYSE-Listed Adtech Company
Name and company redacted for client privacy.
“Handling DSARs is a massive pain point for me with GDPR compliance. We've been working around this problem for 6+ years, across multiple companies.”
Head of IT & Security
Midmarket UK Tech Company
Name and company redacted for client privacy.
“This is marvelous. I'm the Slack admin of my company and I'm tired of searching through the json files for messages for HR investigations. Now I can share relevant exports with legal in a few clicks.”
Deborah, IT Manager
Large Not-For-Profit Organization
“With ViewExport, we were able to easily work with a very large Slack export and resolve our incident much faster compared to other Slack export solutions. The tool has great functionality with improvements happening on a regular cadence as well as fantastic support from the ViewExport team.”
Matt R, Head of IT
Large Game Studio in California
Name and company redacted for client privacy.
“Glad for ViewExport - in Slack you can't filter easily by date range, which is annoying and not usable for Legal/eDiscovery. And Onna is way too expensive. You guys are perfect.”
Chief Information Officer
NYSE-Listed Adtech Company
Name and company redacted for client privacy.
“Handling DSARs is a massive pain point for me with GDPR compliance. We've been working around this problem for 6+ years, across multiple companies.”
Head of IT & Security
Midmarket UK Tech Company
Name and company redacted for client privacy.
“This is marvelous. I'm the Slack admin of my company and I'm tired of searching through the json files for messages for HR investigations. Now I can share relevant exports with legal in a few clicks.”
Deborah, IT Manager
Large Not-For-Profit Organization
FAQ
Need help?
Whether you're opening your first Purview export or standardizing PST review across a firm, we're here to make it simple.
Any standard .PST archive: exports from Outlook Classic, Exchange mailbox exports made with PowerShell, and the PST packages produced by Microsoft Purview eDiscovery and Content Search. That covers Exchange email, Teams chats, and anything else Microsoft 365 exports to PST format.
No. ViewExport opens PST files on its own, with no Outlook or Office license required. This also solves the “new Outlook” problem: Microsoft's replacement Outlook app dropped PST support entirely, but ViewExport reads the files directly.
Yes. The downloadable desktop edition processes PST files entirely on your own computer, so sensitive email never touches our servers. See the Downloadable tab on our pricing page.
Yes, that's where we started. Upload Slack export archives and PST email archives to the same workspace, and search both when a matter spans Slack and email.
Flat licensing rather than per-gigabyte processing fees, which is where review platforms get expensive on large PST productions. Compare plans on our pricing page, and start with a free trial.
We serve organizations around the world with strict data governance requirements. Here's our full security overview, and remember that the desktop edition keeps data on your machine entirely.