MSG Viewer — Open Outlook .msg Files Without Outlook
Someone sent you a .msg file and you don't have Outlook? Drop it below. This free online MSG viewer parses Outlook's binary format right in your browser and shows the message, sender details and attachments. 100% in your browser — nothing uploads.
Drop .eml or .msg files here — or click to choose
Opens instantly. Your files never leave this device — parsing runs 100% in your browser.
Why .msg files are so awkward
When you drag an email out of Outlook for Windows onto your desktop, Outlook saves it as a .msg file — a Microsoft OLE compound document, essentially a tiny binary filesystem holding the message's properties, body and attachments. Unlike .eml (which is readable text underneath), a .msg opened in a text editor is pure garbage bytes.
That makes .msg files a headache the moment they leave the Outlook ecosystem: Mac users, Gmail users and anyone on a phone can't open them natively. The usual advice is "install Outlook" or "buy a converter app". This page is the simpler answer — a parser for the MSG format that runs as JavaScript in the browser you already have. It reads the sender, recipients, subject, date, the HTML or plain-text body, and unpacks every attachment for download.
MSG vs EML at a glance
MSG: Outlook for Windows (drag a message to the desktop). EML: nearly every other mail system — Gmail, Thunderbird, Apple Mail, mail servers.
MSG: binary OLE compound file. EML: plain-text MIME — you can open one in a text editor and recognize the headers.
MSG: effectively Outlook-only without a dedicated parser. EML: the closest thing email has to a universal save format.
Both open the same way — drop the file, read the message, download attachments, export a PDF.
FAQ
How can I open a .msg file without Outlook?
Drop it into the viewer on this page. MSG is Outlook's proprietary binary format, so a text editor shows garbage — but this viewer parses the format directly in your browser and shows the sender, subject, body and attachments. No Outlook licence, no install, no upload.
What's the difference between MSG and EML?
EML is an open, text-based standard (MIME/RFC 822) that nearly every mail system can produce and read. MSG is a Microsoft OLE compound binary file used only by Outlook for Windows — dragging a message out of Outlook creates a .msg. EML is portable; MSG generally needs Outlook or a dedicated parser like this one.
Can I convert a MSG file to EML?
Not directly on this site — we display .msg files rather than converting them. But you can open the .msg here, read everything, download its attachments, and use Export PDF to get a portable copy of the message. For true MSG-to-EML conversion you'd need Outlook itself or a dedicated converter tool.
Are .msg attachments supported?
Yes. Attachments embedded in the .msg file are listed with filename, type and size, each with a download button. Inline images referenced by the message body are rendered in place where the file provides them.
Is my .msg file uploaded anywhere?
No. Like the EML viewer, MSG parsing runs 100% in your browser with JavaScript. The file never leaves your device, and closing the tab removes everything from memory.