mailfile

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An inspector for Outlook .msg and RFC 5322 .eml files, running the library itself — parsed, converted and round-trip checked inside this tab.

GitHub npm

Drop a message here .msg or .eml — or click to browse

Nothing is uploaded. The file is read by mailfile inside this page and never leaves your browser, which is rather the point of a client-side mail parser.

<script src="https://cdn.jsdelivr.net/npm/mailfile@0/dist/mailfile.min.js"></script>

const { data, format, message } = mailfile.convert(bytes, { filename: 'note.msg' })

That is the entire integration, and it is exactly how this page works — no build step, no bundler, no server, no dependencies. The page is one static file, docs/index.html, in the repository. Written against the open specifications:

[MS-CFB] [MS-OXMSG] [MS-OXRTFCP] [MS-OXRTFEX] MIT