MBOX viewer
To open a MBOX file, drop it in the box below. It opens straight away, even with no extension or the wrong one. Your browser opens it on your device: nothing is uploaded.
Open in
Opened on this device, never uploadedDrop or paste another file at any time
What you see
| MBOX in the viewer | |
|---|---|
| Messages | Listed as the file is read, up to 200,000 |
| Search | By sender, recipient or subject |
| Size | Read in slices, so large mailboxes open |
| Next | Convert to a ZIP of .eml files or a CSV list |
| Extensions | .mbox, .mbx |
| Upload | None: opened on your device |
What is a MBOX file?
In short
MBOX is a mailbox: many emails in one text file, each starting with a “From ” line. Thunderbird, Apple Mail and Gmail’s Takeout export them.
Every message in the mailbox, with its sender, subject and date, and a search. A message opens as an email, with its attachments.
How to open a MBOX file
- Add your MBOX. Drop the file in the box, choose it or paste it.
- Look at it. Every message in the mailbox, with its sender, subject and date, and a search. A message opens as an email, with its attachments.
- Take it further. Open in hands it, in a new tab, to File converter or Batch.
Questions
Drop the .mbox here: its messages are listed, and each opens as an email.
Yes: Convert makes a ZIP with an .eml file for each message.
No. The viewer runs in your browser and opens the file on your device. Nothing is sent anywhere.