Someone forwards you a .msg and the machine in front of you has no Outlook, so double-clicking it does nothing at all. Upload it to the email viewer — EML, MSG and EMLX, up to 10 MB — and the message opens in the browser, deleted when you close the tab.
The two formats fail differently, which is worth knowing. MSG is Outlook's own binary format, so without Outlook your system has no idea what is inside. EML is plain MIME text, so it will open in a text editor — and what you get is raw source with the body as base64. Readable is not the same as legible.
What you get when the message opens
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The message as the recipient saw it: sender and recipients, date, subject, and the body with its formatting.
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The attachments, listed separately, so you can open the invoice without hunting through the email that carried it. And if the attachment turns out to be a DWG or a PSD, the same site has a viewer for that too.
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The full header trail: From, To, Cc, Date, Message-ID and the Received lines. This is the part people actually come back for — when an email is the record of an approval or a price, the evidence is in the headers, and mail clients hide them by default.
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Search across the body and the headers, which is how you find the one sentence buried forty replies down a thread.
No install, no plugin, no account. One message at a time.
Why Should You Try Doconut.app?
If email files reach you regularly — discovery bundles, archived correspondence, a chain forwarded into a dispute — the header trail is usually why a viewer beats forwarding it to someone with Outlook.
Be clear about the boundary, though: this views messages, it does not manage them. There is no archive, no folder structure and no export. One file, read, deleted.
When it has to live inside your own software
If your case-management or support system needs to show users a .msg, that is the Doconut SDK at Doconut.com — the licensed .NET component behind this site, installed on your own servers.
What that adds
- It runs in your environment: the message is rendered inside your application, against your own permissions, and makes no calls out to us.
- 75 extensions: email alongside PDF, Office, CAD, Visio, Project and images, so an attachment of almost any kind has a renderer.
- Conversion, if you licence it: the Converter plugin is one of four sold on top of the viewer, with Annotation, DICOM and Search.
Ready to Give It a Try?
Drop the message that is currently stuck on the email viewer — free, no account, gone when you close the tab. If it needs to happen inside your own application instead, the SDK is licensed at Doconut.com.