Magic Soft OST Converter for Windows

Convert orphaned and Exchange OST files to PST, EML, MSG, PDF, MBOX, VCF, ICS and CSV. Works without Outlook or Exchange connection. Handles files up to 500GB. Free trial available.

When an Exchange server goes down or an Outlook profile gets deleted, the OST file left behind becomes completely inaccessible. Outlook locks it. There's no built-in way to extract the data without restoring the original server connection. Magic Soft OST Converter was built exactly for this situation.

The software reads OST files directly — no Exchange server, no active Outlook profile, no add-ins needed. It extracts the full mailbox and exports it in whatever format you actually need.

SUPPORTED OUTPUT FORMATS

1. OST to PST — Standard Outlook PST file, importable on any machine

2. OST to EML — Compatible with Thunderbird, Apple Mail, Windows Live Mail

3. OST to MSG — Outlook-native format, opens with a double-click

4. OST to PDF — Readable in any browser, zero email software required

5. OST to MBOX — Import into Thunderbird, Gmail, Mac Mail

6. OST to VCF — Contacts exported for Android, iPhone, Google Contacts

7. OST to ICS — Calendar events for Google Calendar, Apple Calendar

8. OST to CSV — Structured data in spreadsheet-compatible format

ORPHANED OST FILES — THE MAIN USE CASE

An OST becomes orphaned during server failures, domain migrations, Office 365 moves, hardware crashes, or when Exchange accounts are deleted before data is archived. Once orphaned, Outlook refuses to open it. Magic Soft OST Converter handles these files without any Exchange environment. Point it at the OST file, preview the contents, and export — the Exchange server doesn't need to exist.

HANDLES MAILBOXES UP TO 500GB

Tested with OST mailboxes up to 500GB and beyond. Performance stays consistent regardless of file size — unlike most tools that slow or fail past 10–20GB.

PREVIEW BEFORE YOU CONVERT

Full mailbox preview before anything is exported. Browse folders, read emails, check attachments, contacts, calendar items, tasks, and notes. Confirm the data is intact before committing to conversion.

SELECTIVE EXPORT

Convert everything or just what you need. Filter by folder, item type (emails, contacts, calendar), or date range. Useful for legal holds, compliance extractions, or targeted data recovery.

SUPPORTS ALL OUTLOOK VERSIONS

Compatible with Microsoft 365, Office 2019, 2016, 2013, 2010, 2007, and 2003. Both ANSI and UNICODE OST formats supported.

ENCRYPTED OST FILES SUPPORTED

Password-protected and encrypted OST files are handled. Enter the password at the loading stage and the software processes the file normally.

100% NON-DESTRUCTIVE

Read-only operation throughout. The original OST file is never modified, altered, or deleted. Your source data stays exactly as it was.

NO OUTLOOK OR EXCHANGE REQUIRED

Fully standalone. No dependency on Outlook being installed, no Exchange profile, no Microsoft product required. Runs on a clean Windows environment.

FREE TRIAL

No time limit or expiry. Preview full mailbox contents in detail. Export is limited to 25 items per folder — enough to verify accuracy on real data before purchasing.