A free, in-browser email viewer. Read .eml files, see and block the trackers hidden inside, and export to PDF — with nothing ever uploaded to a server.
Drop an .eml file, or click to browse
Parsed locally in your browser — nothing is uploaded.
No .eml handy?
Remote images and trackers are blocked by default.
Everything happens on your device. Your emails are never sent anywhere.
Drag in a single .eml, or a whole folder to browse an archive.
Rendered in a sandbox with trackers and remote content blocked by default.
A Rust engine parses it all locally. Unplug your network and it still works.
Everything you need to open, read, inspect, and convert email — safely.
No upload, no server, no account. It physically can't send your email anywhere.
See exactly who tried to track you — and keep their pixels blocked while images still load.
Export any email to a clean, selectable PDF in one click. All local, nothing uploaded.
Read the HTML, the plain-text version, or the raw headers and MIME source.
A WebAssembly engine parses even messy, real-world MIME quickly and faithfully.
Every line is auditable. Don't trust the privacy claim — verify it yourself.
Open your browser's network tab, load an email, and watch it stay empty. There's no backend to send data to — by design.
Just drag it onto Airlock. It opens .eml files right in your browser — no Outlook, no Thunderbird, no software to install. It's free and works on any operating system.
An .eml file is a single saved email in the standard MIME format — the same format email servers use. It contains the message, its headers, formatting, and any attachments. Exporting from Gmail, Outlook, or Apple Mail often produces .eml files.
With most online viewers, you're uploading your private email to someone else's server. Airlock is different: it never uploads anything. Files are parsed entirely on your device, rendered in a locked-down sandbox, and remote trackers are blocked by default. It even works with your network disconnected.
No. There is no server and no account. Your email is read locally in your browser and never transmitted. Because it's open source, you can verify this yourself.
Yes. Open an email and click PDF to export a clean, selectable PDF — done entirely on your device, with any trackers stripped out.
Completely. Once the page has loaded you can go offline and keep opening emails. Since nothing is ever sent to a server, offline is the default state.