A .msg file is an email saved by Microsoft Outlook in the MAPI format, stored inside an OLE2 compound-file container. It holds the message headers, body (plain and HTML), and any attachments as binary property streams.

Can I open a .msg without Outlook?

Yes. This viewer parses the .msg compound file directly in your browser and shows the sender, subject, body and attachments — no Outlook or upload required.

Runs in your browser — nothing you paste is uploaded.

MSG Viewer

Open an Outlook .msg file to read its headers, body, and attachments — no Outlook needed. The MAPI/OLE format is decoded in your browser; the message is never uploaded.

Drop a .msg file here or click to choose

What it does

An Outlook .msg file is a MAPI message stored inside an OLE2 “compound file” — a little filesystem of binary streams. This viewer reads that container, pulls the MAPI properties (subject, sender, recipients, plain and HTML body), decodes the character sets, and lists attachments.

Safe HTML rendering

The HTML body is shown inside a fully sandboxed <iframe> with scripts disabled, so anything embedded in the message can't run. Switch between HTML and plain-text views.

Attachments

Attachments are decoded from the message's __attach streams and listed with name, type and size, ready to save.

Notes & privacy

Everything is parsed locally — nothing is uploaded. Embedded messages and RTF-only bodies aren't expanded. Got a plain .eml instead? Use the EML Viewer (this page also auto-detects and handles .eml if you drop one).

What it does

Safe HTML rendering

Attachments

Notes & privacy

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