MSG to EML Converter
Processing entirely on your device — large files may take a moment.
Outlook Message and Email Message (RFC 822) exist for different jobs: MSG is Outlook's saved-email format: an OLE compound file holding headers, the HTML/plain body, recipients and attachments. It only opens properly inside Outlook — everywhere else it is a black box. Convert EML to clean HTML/TXT for archiving, discovery workflows or feeding correspondence into other tools.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How MSG compares to EML
| MSG | EML | |
|---|---|---|
| Layout | As saved in Outlook | As sent (RFC 822/MIME) |
| Editability | Outlook only (natively) | Any text editor |
| Structure | OLE compound document | Headers + MIME body |
| Best for | Archived Outlook correspondence | Cross-client email archives |
How to convert MSG to EML
- 1
Select your files
Drag & drop your MSG files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to EML". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted EML file individually, or grab everything at once as a ZIP archive.
About the MSG format
A .msg file is Outlook's saved email: an OLE compound document that stores headers, the HTML or plain-text body, recipients, flags and attachments. It opens cleanly only inside Outlook itself — everywhere else, including most web mail tools, it is an opaque binary.
Converting MSG to HTML or TXT puts the correspondence where people can actually read it — archives, discovery tools, CRM imports. Converting to EML hands it to every other mail client, which all speak the open RFC-822 standard instead of Outlook's container.
+ Strengths
- ✓Preserves Outlook-only correspondence
- ✓Body, headers and attachment names survive
- ✓EML output opens in Thunderbird and every client
! Limitations
- −Attachments are listed but not extracted here
- −Outlook-specific flags and categories are lost
- −Complex RTF bodies may simplify to text
About the EML format
EML is the open email format (RFC 822/MIME): readable headers followed by a body that may be plain text, HTML or multipart. Every mail client exports it, every standard knows it — yet outside a mail app, a raw EML is a wall of headers and MIME boundaries.
Converting EML to clean HTML or TXT produces correspondence you can file, search and feed into other systems — the format stays open, but the reading experience finally matches what the sender intended.
+ Strengths
- ✓The open standard every client exports
- ✓Headers stay intact and searchable
- ✓Multipart bodies resolved to readable content
! Limitations
- −Attachments are listed but not extracted here
- −Exotic encodings occasionally need manual care
Why convert MSG to EML?
Converting makes sense where the strengths of EML meet what MSG cannot give you. The open standard every client exports Meanwhile Attachments are listed but not extracted here One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this MSG to EML converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for MSG to EML?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Does the conversion work offline?
Yes. Once the page has loaded, the conversion itself runs entirely inside your browser — you can even disconnect and keep converting. No file ever touches a server.
Will the layout of my MSG file be preserved exactly?
This converter renders your MSG content into EML with pages, proportions and images kept as close to the original as the target format allows. Use the preview before downloading to confirm it looks the way you expect.