Read an mbox Mail Archive

Features

• Splits on From lines at the start of a line — "From" inside a body is not a separator
• Restores the mbox >From escaping and unfolds wrapped headers
• Decodes base64 and quoted-printable bodies
• Decodes non-UTF-8 charsets, and labels a body it cannot decode
• Splits multipart on the boundary so bodies and attachments land correctly
• Reports the date range, top senders, attachment list and per-message summaries
• One broken message does not fail the rest; failures are listed by number

How to use

1. Drop the .mbox file in (or click to choose)
2. Wait while it is parsed locally
3. Read the message count, date range and top senders
4. Check each message in the summaries and attachment list

FAQ

Why are there fewer messages than I expected?

An mbox requires each message to begin with "From " at the start of a line. Messages without that separator, or files that are actually another export format (Outlook .pst, a single .eml), will not be split out.

Can I export the attachments?

No. This tool only lists attachment names and sizes — expanding binary attachments in a text area would be unusable and would suggest they can be downloaded. Use a mail client to open the original archive if you need the files.

What if a non-English subject looks garbled?

The tool decodes according to the charset the header declares. If the current environment cannot decode that charset it labels the message instead of handing you noise and pretending it worked.