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MBOX File Format

Mailbox file (Berkeley Unix)

MBOX is a file extension for a text file used to organize and store e-mail messages. MBOX stands for MailBOX. 

The MBOX file is the most common format for storing email messages on a hard drive. All the messages for each mailbox are stored as a single, long, text file in a string of concatenated e-mail messages, starting with the “From” header of the message. MBOX files were used predominantly on Unix. MBOX files are still used with several current e-mail clients, including Mozilla Thunderbird, Microsoft Entourage and Qualcomm Eudora.

 

MIME type: text/x-mailbox

 

Learn more about .MBOX files:

Visit MBOX at Wikipedia.

Learn about Email at ITKnowledgeExchange.com.

This was last updated in September 2010
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Format used by Google Mail to back up email.
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