File Content Extraction 25.2
Filter SDK C Programming Guide

# Mailbox Files

A Mailbox (MBX) file is a collection of individual emails compiled with RFC 822 and RFC 2045 - 2049 (MIME), and divided by message separators. There are many mail applications that export to an MBX format, such as Eudora Email and Mozilla Thunderbird.

In Eudora MBX files, attachments are inserted as a link and are stored externally from the message. These attachments are not extracted, but the path to the attachment is returned in the call to the fpGetSubFileInfo() function. You can write code to retrieve the attachment based on the returned path.

For MBX files from other clients, File Content Extraction extracts attachments when they are embedded in the message.

The Mailbox (MBX) reader is an advanced feature and is sold and licensed separately. To enable this reader, you must obtain the appropriate license key from OpenText. See Pass License Information to File Content Extraction for information on adding a new license key to an existing installation.

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Version 25.2 | Last updated April 2025

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Product: File Content Extraction 25.2

Topic Title: Mailbox Files