Common in Unix mailboxes and Google Takeout
MBOX explained
An MBOX is many internet messages in one long file.
Messages are separated by From_ lines and contain normal email headers and MIME bodies. Real archives vary, so tolerant incremental parsing matters.
Free · private · no uploads · no accountOpen an email file
Drop it here or choose it from your computer.
MSGEMLEMLXWINMAIL.DATMBOX
Processed locally. Your file never leaves this browser.
How it works
Three steps. No detour through a server.
- 1Drop the archive
- 2Index message boundaries progressively
- 3Search and open individual messages
May grow to many gigabytes
The source archive remains read-only
Straight answers
Common questions
Why not open MBOX in a text editor?
You can, but attachments are encoded and message boundaries, MIME structure, and character sets make large archives hard to navigate manually.
Does MBOX contain folders?
A single MBOX is usually one flat message sequence. Some exports use multiple MBOX files to represent folders or labels.