Free online tool
Online MSG Viewer
Open your MSG files instantly, right here in your browser. Fully client-side — your files are parsed on your device and are never uploaded to our servers.
Drop your .msg file here
or click to browse from your computer
Max file size: 50 MB
How it works
Three steps. Nothing to install.
Opening an Outlook .msg file usually requires Outlook or an expensive third-party app. This viewer opens it in your browser — no account, no upload, no setup.
Step 1
Drop your .msg file
Drag a file onto the viewer or browse for it. Nothing is uploaded — parsing starts instantly in your browser tab.
Step 2
It's parsed locally
The message is decoded on your device with JavaScript, so email content and attachments never leave your computer.
Step 3
Read, copy, and review
See the full header, formatted HTML body, and attachment list — then copy the message text in one click.
What you get
Everything that was in the email
The viewer renders messages the same way they were intended to be read — right in your browser tab.
Full message details
Sender, recipients, subject, and date — shown exactly as they appear in the original message.
Rich HTML body
Formatted emails render with their original layout, styling, and inline images intact.
Attachment list
Every attachment with its file name and size, so you know what's included before opening anything.
Any device, any OS
Works in Chrome, Edge, Firefox, and Safari on Windows, Mac, Linux, and ChromeOS.
FAQ
Online Viewer Questions
Need More Than a Browser?
The OpenMSG Windows app opens files in milliseconds, saves attachments to your device, and works fully offline. Free for personal use.
Free for personal use · Enterprise licensing from 50 users