Use Cases

How Teams Use OpenMSG

OpenMSG gives legal, IT, and business operations teams a fast, private way to open MSG files on Windows — no Outlook install required.

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Who it's for

Built around your team's workflow

Three teams, one lightweight viewer. Choose your industry to see the scenarios that come up most often.

Business & Operations

Client & vendor email review

For sales teams, project managers, and executives who need to open MSG files from partners, vendors, and clients — without an Outlook install on every machine.

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Legal & Compliance

Case files, audits & due diligence

For law firms and compliance teams that open and inspect MSG files during audits and regulatory reviews — locally, offline, and read-only.

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IT & System Administration

Helpdesk & managed deployment

For helpdesk technicians and sysadmins who triage exported mailbox files, check message details, and recover attachments — with no Outlook deployment.

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Common ground

What every team gets

Opens .msg files without Outlook installed

Emails and attachments are processed on the device

Read-only — original MSG files are never modified

MSIX package for Intune, SCCM, and Group Policy

Windows 10 (1809+) and Windows 11, x64

Free for personal use; volume licensing from 50 users

Scenario examples on these pages are illustrative and are not legal, compliance, or licensing advice. Microsoft, Microsoft 365, Outlook, and Exchange are trademarks of Microsoft Corporation. OpenMSG is an independent product and is not affiliated with, endorsed by, or sponsored by Microsoft.

Ready to License OpenMSG for Your Team?

Volume licensing starts at 50 users, with annual and perpetual options. Free for personal use from the Microsoft Store.

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