
A common filename is All mail Including Spam and Trash.mbox. From, X-Gmail-Labels, X-GM-THRID, Delivered-To, gmail, Received, Category, Inbox, Unread, by 2002, 0000 20 2020. A number of words can almost always be found in the files, e.g. The files are on average 77 MB in size and range from 140 KB to 1 GB. If you open these files in a text editor, you can view and read the content yourself.

Related links: MBOX Email FormatĮach file has a definite file format, that is, how the stored data is arranged in the file. This file format is classified as Simple text file. The contents of such a mailbox are saved as text. Windows MBox Viewer is a desktop application which can read single-file mailboxes saved in MBOX (UNIX Mailbox) format. Just drag the file onto this browser window and drop it. You can also display a MBOX file directly in the browser. Then click "Open with" and choose an application. If you cannot open your MBOX file correctly, try to right-click or long-press the file.

Without proper software you will receive a Windows message " How do you want to open this file?" or " Windows cannot open this file" or a similar Mac/iPhone/Android alert. You need a suitable software like Thunderbird to open an MBOX file.


Tools are available for exporting messages as MBOX files from Outlook and GMAIL. Windows MBox Viewer can also read MBOX messages. Thunderbird email client's ImportExportTools NG add-on can import, export, and read emails saved in MBOX files. Each message in a UNIX Mailbox file has the following structure: The contents of an MBOX file is saved as a single plain text database (mailbox) to which new messages are appended. An MBOX file contains email messages saved in UNIX Email Format. MBOX files mostly belong to Thunderbird by Mozilla.
