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MSG File Viewer Online

View any .msg file in your browser for free. No Outlook, no software to install, no account. Works on Mac, Windows, Linux, and mobile.

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Drop file here

or click to browse

.msgwinmail.dat

What is a MSG file?

A .msg file is a Microsoft Outlook email message saved as a standalone file. It uses the CFBF (Compound File Binary Format) — a proprietary Microsoft format that stores the email subject, sender, recipients, body, and attachments in a single binary file.

MSG files are commonly created by dragging an email out of Outlook into a folder, or by using Outlook's "Save As" function. They're also used by legal teams, compliance systems, and email archiving software.

Frequently asked questions

How do I view a MSG file without Outlook?

Drop your .msg file onto MailSnap. It reads the file in your browser and displays the full email — no Outlook needed, on any operating system.

What is a .msg file?

A .msg file is a Microsoft Outlook email stored as a file. It contains the subject, sender, body, and attachments in a binary format called CFBF.

Can I open a MSG file on a Chromebook?

Yes. MailSnap is browser-based and works on Chromebooks, Windows, Mac, Linux, iOS, and Android.

Can I view MSG files in bulk?

Currently MailSnap opens one file at a time. Drop a new file to replace the current one.