Free local Outlook .msg & .eml viewer
Open .msg & .eml
emails in your browser.
Read Outlook .msg and standard .eml messages and extract enclosed attachments locally in your browser without uploading private emails.
Drop your .msg or .eml file here.
Or choose an Outlook .msg or .eml file from your device, up to 50 MB. No account. No uploads.
Up to 50 MB and 128 attachments. Parsed locally in memory on your device.
Use is subject to our terms. Read the privacy policy.
How this .msg and .eml viewer works
Saved emails usually arrive in one of two formats:
- Outlook
.msgfiles (D0 CF 11 E0 A1 B1 1A E1): When someone drags an email out of classic Microsoft Outlook on Windows, Outlook saves a Compound File Binary (OLE2) container holding MAPI property streams (__substg1.0_0037for the subject,__substg1.0_1000for the body, and__attach_version1.0_#...sub-storages for each enclosed file). Apple Mail and Quick Look on macOS cannot open.msgfiles natively. - Standard
.emlfiles (RFC 5322 / MIME): Plain-text headers (From,To,Subject,Date) followed by multipart MIME boundaries containing the message text andbase64orquoted-printableencoded attachments.
This tool inspects both formats 100% locally in your browser: it reads the sender, recipients, subject, date, plain-text body preview, and lets you save individual attachments or download all attachments as a ZIP archive without uploading confidential correspondence to any server.
Learn more in our guide on how to open .msg files on a Mac, or unpack winmail.dat TNEF attachments with the free winmail.dat extractor.
Convert .msg to .eml
right on your Mac.
The native File Sniff app for Mac converts Outlook .msg files into standard .eml messages that open directly in Apple Mail, with full offline privacy.
Common questions
Are my .msg or .eml emails uploaded to a server?
No. Your browser parses OLE2 .msg streams and RFC 5322 .eml parts locally in memory on your device. Private emails and attachments never leave your device. See our privacy overview.
Why won’t Apple Mail open an Outlook .msg file on Mac?
Apple Mail natively supports standard RFC 5322 .eml files, whereas Windows Outlook saves dragged-out messages in Microsoft’s proprietary OLE2 Compound File Binary format (.msg). Read how to open .msg files on a Mac.
What if my Outlook attachment is named winmail.dat instead of .msg?
Use the free winmail.dat (TNEF) extractor to unpack attachments from winmail.dat or ATT00001.dat files.