How to open a .MHT file online
No mail account and no extra software to install.
Pick your .MHT file
Drag it in or click to choose it. It opens here in a moment.
Read it safely
The message opens in a locked-down view: scripts never run, and remote images often used for tracking stay blocked until you allow them.
Check and save
Download attachments, read the full headers, and see every server the message passed through, with SPF, DKIM and DMARC results.
About .MHT files
What a .MHT file is, and what's inside it.
An MHT (MHTML) file is a complete web page (HTML, images, CSS, and scripts) bundled into one file with the same MIME packaging email uses. Open it by dragging it into Microsoft Edge or Google Chrome. The main reason people convert an MHT file is to get a PDF, which you can do directly from the browser's print dialog.
Programs that open .MHT files
| Full name | MIME HTML Web Archive (MHTML) |
|---|---|
| Developer | IETF standard (RFC 2557); popularized by Microsoft Internet Explorer |
| First released | RFC 2557 (1999); .mht popularized by Internet Explorer 5 (1999) |
| Category | |
| MIME type | multipart/related; message/rfc822 |
Related viewers
Open the attachments you find.
Is it safe to open a suspicious .MHT file here?
Safer than in a mail client: the message runs in an isolated frame with scripts disabled, remote images and trackers are blocked until you allow them, and attachments are never opened automatically.
How can I tell if an e-mail is fake?
Look at the Message info panel. We show the SPF, DKIM and DMARC results recorded by the receiving server, warn you when the Reply-To address differs from the sender, and list every server the message passed through.
Can I open a Gmail or Thunderbird mailbox (.mbox)?
Yes. Drop the .mbox file and you'll get a searchable list of every message. Click one to read it.
Why does my MSG file show plain text only?
Some Outlook messages store their formatting only as compressed RTF. We show the text today; full RTF formatting is coming soon.
Can I open .pst or .ost files?
Not yet. Outlook data files are on our roadmap. Meanwhile you can export single messages from Outlook as .msg and open them here.
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