mbox1.3 KB
MBOX Mailbox (three-message thread)
An mbox mailbox concatenating a short three-message email thread with the classic 'From ' separator lines and >From body escaping — for testing mailbox splitting and thread reconstruction.
Preview — first 39 linesmbox
From maya@brightside.example Thu Jan 15 09:30:00 2026
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
From: Maya Chen <maya@brightside.example>
To: Sam Rivera <sam@meridiansupply.example>
Subject: Your quote Q-2026-0148
Date: Thu, 15 Jan 2026 09:30:00 -0800
Message-ID: <t1@brightside.example>
SGkgU2FtLAoKQ291bGQgeW91IHNlbmQgYSBxdW90ZSBmb3Igb3VyIG1vbnRobHkgc3VwcGxpZXMg
b3JkZXI/CgpUaGFua3MsCk1heWEK
From sam@meridiansupply.example Thu Jan 15 09:30:00 2026
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
From: Sam Rivera <sam@meridiansupply.example>
To: Maya Chen <maya@brightside.example>
Subject: Re: Your quote Q-2026-0148
Date: Thu, 15 Jan 2026 11:05:00 -0800
Message-ID: <t2@brightside.example>
SGkgTWF5YSwKCkF0dGFjaGVkIGlzIHF1b3RlIFEtMjAyNi0wMTQ4LiBJdCdzIGhlbGQgZm9yIDMw
IGRheXMuCgpTYW0K
From maya@brightside.example Thu Jan 15 09:30:00 2026
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
From: Maya Chen <maya@brightside.example>
To: Sam Rivera <sam@meridiansupply.example>
Subject: Re: Your quote Q-2026-0148
Date: Thu, 15 Jan 2026 13:40:00 -0800
Message-ID: <t3@brightside.example>
UGVyZmVjdCwgd2UnbGwgY29uZmlybSBzaG9ydGx5LiBUaGFua3MhCk1heWEK
Specifications
- Format
- mbox (mboxo)
- Messages
- 3
- Separators
- 'From ' lines
- Escaping
- >From
What is a .mbox file?
An MBOX file is a mailbox that stores many email messages concatenated into one plain-text file, each message preceded by a 'From ' separator line. It is the classic Unix mailbox format used by many mail clients for export and archival.
How to use this file
Use an example MBOX to test mailbox splitting, message boundary detection, thread reconstruction, and import into a mail client or parser.
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Generated by generation/email_samples.py. Free for any use, no attribution required — license.