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The address book inside the PST,out as CSV or vCard.

An old mailbox holds more than mail. Its Contacts folder carries names, companies, phone numbers, and street addresses gathered over years, and PstVault writes them out as a spreadsheet table or vCard 4.0 cards.

Open the Contacts folder, select the people you need, and export one CSV table for Excel or a vCard per contact, with calendars as ICS.

Pay once. Own it forever.

One-time purchase on the Microsoft Store · No subscription · Instant install

Get it from Microsoft

Buy through the Microsoft Store—instant install, automatic updates, and a Microsoft receipt for easy expensing. No account needed on our site, and no subscription on Store purchases.

Full PstVault overview
One-time purchase No telemetry Local-first

windows · no outlook needed · pst never changed · nothing uploads · 15-day free trial

If this sounds like your week

Years of contacts, locked in an archive.

Sales reps, office managers, and consultants build their address books inside Outlook without thinking about it. When a laptop is replaced or a role ends, those people survive only in a PST beside the mail. A new phone, a CRM, or the spreadsheet a team actually shares cannot read that file, so the client and supplier list sits out of reach.

Where tooling usually breaks

Retyping an address book is nobody’s job.

Copying by hand means opening each card, selecting fields, and pasting them into columns, with typos creeping into phone numbers and email addresses. Calendars are worse: recurring meetings, all-day events, and time zones rarely survive being keyed into a new calendar from memory.

Where PstVault lands

Typed exports for typed items.

PstVault recognizes contacts and appointments in the archive and exports them in formats built for each. Contact table (.csv) writes one table for the whole selection, with a header row and columns for full name, given name, surname, company, job title, department, up to three email addresses, phones, addresses, and notes. Contacts (.vcf) writes vCard 4.0 cards, and Calendar (.ics) writes events with their recurrence and time zones.

Pay once. Own it forever.

One-time purchase on the Microsoft Store · No subscription · Instant install

Get it from Microsoft

Buy through the Microsoft Store—instant install, automatic updates, and a Microsoft receipt for easy expensing. No account needed on our site, and no subscription on Store purchases.

Learn more about PstVault

windows · no outlook needed · pst never changed · nothing uploads · 15-day free trial

What you get

Feature highlights

Opens a PST without Outlook

reads Outlook data files directly, from Open PST, a double-click in File Explorer, or the Recent list, and shows every folder with its message count.

Finds the mail you need

Sender, Subject, Body, Recipient, From date, and To date filters across one folder and everything beneath it, or All folders, with results listed newest first.

PDF your way

one PDF for the selection with a bookmark per item, or one PDF per item, on Letter or A4, with PDF, PNG, JPEG, and text attachments appended as pages and the originals embedded.

EML and offline HTML

standard .eml files with headers, bodies, and attachments inside, and sanitized HTML reading copies with local pictures that open in any browser.

Contacts and calendars

vCard 4.0 files or one contact table (.csv) for Excel, and calendar events as .ics with recurring series and time zones; Native files picks the format for each item.

A report of everything saved, and the PST untouched

a JSON report lists each item, its format, and the size and SHA-256 hash of every file written; the PST is read-only and nothing uploads.

Especially when

  • Open a PST file from an old backup or a former colleague without installing Outlook or setting up a mail profile
  • Find the handful of messages that matter in a large archive by sender, recipient, subject, body text, and date
  • Hand over selected emails as one bookmarked PDF, standard EML files, or offline HTML, with the attachments kept
  • Keep the archive unchanged and the mail on the PC, with no upload, no account, and a report of every file saved

Who benefits

Real-world scenarios

A client list for a new CRM

A consultant leaving a firm takes her archive PST with permission and needs her client contacts in the CRM she now runs on her own, which imports CSV files.

She opens the Contacts folder in PstVault, selects all results, and exports Contact table (.csv). One file named after the PST lands in the folder she chose, with a header row the CRM import maps column by column.

Personal contacts onto a new phone

A retired engineer wants the personal contacts from his old Outlook archive on his phone, which imports vCard files, without setting up a mail program on his PC.

He selects the contacts he still needs and exports Contacts (.vcf). Each person becomes a vCard 4.0 file with names, phone numbers, email addresses, and postal addresses, ready to import on the phone.

Recurring appointments into a shared calendar

An office manager needs the recurring maintenance and inspection appointments from a former facilities coordinator’s PST in the team’s shared calendar.

She opens the Calendar folder, selects the appointments, and exports Calendar (.ics). Recurring series keep their pattern and deleted dates, all-day events stay all-day, and each event carries its time zone into the shared calendar.

Deep dive

How PstVault exports contacts and calendar items

Items by type. A PST holds mail, contacts, and calendar items side by side. PstVault reads each item’s type, shows contacts with their own fields and appointments with their organizer and times in the preview, and checks every format you choose against the items selected, so each one is written in a format made for it.

One CSV table per export. Contact table (.csv) writes the whole selection into one file named after the PST, such as Archive - contacts.csv, with a header row and one row per contact. The columns are FullName, FileUnder, GivenName, MiddleName, Surname, Prefix, Suffix, Nickname, Company, JobTitle, Department, a display name, address type, and address for up to three email addresses, then Phones, Addresses, and Notes. Every value is quoted, so commas and line breaks inside addresses stay in their cells.

Spreadsheet-safe values. A value that begins with an equals sign, a plus, a minus, or an at sign is written with a leading apostrophe, so Excel treats it as text rather than a formula, and the report notes the field. The rest of the value is written unchanged.

vCard 4.0 cards. Contacts (.vcf) writes each person as a vCard 4.0 file with their names, organization, email addresses, phone numbers with labels such as work and home, postal addresses, and notes. Original Exchange address data is kept alongside, so internal addresses from a company mailbox are not lost.

Calendar as ICS. Calendar (.ics) writes each appointment as an iCalendar file with its start and end, location, organizer, attendees, and notes. Timed and all-day events are both supported, recurring series carry their pattern and deleted occurrences, and each event carries a validated time zone, so it lands at the right hour in the calendar that imports it.

Native files for a mixed selection. When a selection holds mail, contacts, and appointments together, Native files writes EML for each message, VCF for each contact, and ICS for each calendar item, in one export.

A report for every export. The JSON report beside the files lists the source, the selection, each item with the format it was saved in and the file it became, and the size and SHA-256 hash of each file written.

Read-only and private. The PST is never written, existing files are never replaced, and the app makes no network connections, so a whole company’s address book never leaves your PC.

How it is built

Built to read the archive and leave it exactly as it was.

Read-only by design

The PST is opened read-only and never written. Every export is a set of new files in the folder you choose, written under a temporary name and committed without replacing any existing file.

Nothing leaves your PC

PstVault runs in the Windows app sandbox with no declared capabilities, makes no network connections, and has no account and no telemetry. Its HTML copies load no remote content.

A report for every export

Each export writes a JSON report with the source, the filters behind the selection, every item and the file it became, and the size and SHA-256 hash of each file written.

FAQ

Straight answers—no glossary dump

What columns does the contact CSV have?

FullName, FileUnder, GivenName, MiddleName, Surname, Prefix, Suffix, Nickname, Company, JobTitle, and Department, then a display name, address type, and address for up to three email addresses, followed by Phones, Addresses, and Notes. The file has a header row, one row per contact, quoted values, and is named after the PST, such as Archive - contacts.csv, so it opens in Excel or imports into a CRM.

Can I export contacts as vCard files instead?

Yes. Choose Contacts (.vcf) in the Export dialog and each selected contact is written as a vCard 4.0 file with names, organization, email addresses, labeled phone numbers, postal addresses, and notes, plus the original Exchange address data. Phones, mail apps, and contact managers import vCard files, and Native files writes VCF for contacts automatically when a selection mixes item types.

Can I export the calendar from a PST?

Yes. Open the Calendar folder in PstVault, select the appointments, and choose Calendar (.ics). Each event is written as an iCalendar file with its start and end, location, organizer, attendees, and notes. Timed and all-day events are both supported, recurring series keep their pattern and deleted occurrences, and each event carries its time zone into the calendar that imports it.

What happens to the PST when PstVault opens it?

Nothing changes. PstVault opens the PST read-only and never writes, moves, or renames it, so the archive is the same after a hundred sessions as it was before the first. Exports are new files in a folder you choose: each one is written under a temporary name and then committed, and a file that already exists there is never replaced. Run another export from the same archive whenever you need a different format or selection.

Where does my mail go when I use PstVault?

Only to the folder you choose. PstVault runs on your PC in the Windows app sandbox with no declared capabilities. It makes no network connections, has no account, and collects no telemetry. The preview shows message text, and the offline HTML copy loads no remote content and runs no scripts, so opening an old message never contacts anyone. Settings and the recent-file list stay in the app’s own local storage.

How do I get PstVault, and can I try it first?

PstVault is a one-time purchase in the Microsoft Store, and the listing shows the current price in your currency. The Store runs a 15-day free trial with every feature, so you can open your own archive, search it, and export a test set before you buy. There is no subscription and nothing to activate in the app. It runs on Windows 10 version 2004 or later and Windows 11, on x64 and ARM64 PCs.

Related pages

A PST viewer that does more than show you the mail. Every message out of the PST as its own .eml file. Open a PST file without installing Outlook.

The mail is already in the PST.
Get out the messages you need.

PstVault opens an Outlook PST without Outlook, finds mail by sender, recipient, subject, body, and date, and exports it as EML, PDF, offline HTML, vCard, ICS, or CSV with a JSON report of every file. The PST is never changed, nothing uploads, and the Microsoft Store runs a 15-day free trial.

Pay once. Own it forever.

One-time purchase on the Microsoft Store · No subscription · Instant install

Get it from Microsoft

Buy through the Microsoft Store—instant install, automatic updates, and a Microsoft receipt for easy expensing. No account needed on our site, and no subscription on Store purchases.

Open full product page

Microsoft and Outlook are trademarks of the Microsoft group of companies. PstVault is not affiliated with or endorsed by Microsoft.

Technical specifications

Technical specifications for procurement

Spec Implementation
Data Sovereignty Reads only the PST you open, read-only, from the Windows file picker or a File Explorer double-click; writes new files and the JSON export report only to the folder you choose, never replacing an existing file; settings and the recent-file list stay in the app’s own local storage
Telemetry Status None; no account, no telemetry, and the app makes no network connections
Core Runtime .NET 10 and WinUI 3 (Windows App SDK), packaged as MSIX; runs in an AppContainer with no declared capabilities; reads the PST with its own managed reader, with no Outlook or MAPI needed
Network Requirements Fully functional offline; the app makes no network connections
Deployment Compatibility Windows 10 version 2004 or later and Windows 11, x64 or ARM64; one-time purchase on the Microsoft Store with a 15-day free trial
Inputs Outlook data files (.pst) in the Unicode format created by Outlook 2003 and later; open from the file picker, a File Explorer double-click, or the Recent list
Search Sender, subject, body, recipient, and a from and to date, across one folder and its subfolders or all folders; results listed newest first
Export formats Email (.eml), PDF reading copy, HTML reading copy, Contacts (.vcf, vCard 4.0), Calendar (.ics), Contact table (.csv), and Native files (EML, VCF, or ICS per item)
PDF options One PDF for the selection with a bookmark per item, or one PDF per item; Letter or A4; PDF, PNG, JPEG, and text attachments appended as pages; original attachments embedded
Attachments Save any attachment from the preview, or save every original, inline pictures included, beside its message on export
Export report JSON report per export: source, folder and filters, each item with its format and output file, and the size and SHA-256 hash of every file written, read back from the destination
System requirements 4 GB of RAM and 300 MB of disk space plus room for exports; 8 GB of RAM recommended for archives above 50,000 messages