Free online MBOX viewer
Open and read MBOX email archives right in your browser. Nothing is uploaded — your file never leaves your device. Up to 25 MB.
100% private — runs entirely in your browser, nothing is uploaded.
The online viewer is built for desktop and iPad. On a phone the screen is too small to read comfortably — open it on a bigger device, or use the desktop app.
Drop your .mbox file here
or click to choose a file
Processed locally · max 25 MB
How it works — and why it's private
Choose your file
Drag a .mbox file onto the box above, or click to pick one. It is opened straight from your disk.
Read it in place
Messages are listed instantly. Click one to read it — HTML is sanitized and remote images are blocked by default.
Nothing leaves your device
There is no upload and no server. The whole viewer runs in your browser, so your email stays private.
Bigger files or more features?
This web viewer is for a quick look at small archives. For files of any size, search, labels and EML support, get the native desktop app for Mac.
- Open MBOX and EML archives of any size — no 25 MB limit.
- Full-text search, folders and Gmail labels.
- Works fully offline on your Mac (Windows coming soon).
Windows — coming soon