DBX file extension is associated with email folders that play the role of email repository for Outlook Express email client. The DBX files are responsible for storing the email messages and associated additional information. Some of the native DBX files that exist within Outlook Express include Inbox.dbx, Folders.dbx, Drafts.dbx, Sent Items.dbx and Deleted Items.dbx. The DBX file extension has raw format structure that is arranged in hexadecimal manner.

Outlook Express DBX file extension fall under Database file category.

• Microsoft Outlook Express
• Microsoft Windows Mail
• Microsoft Windows Live Mail

Microsoft Corporation takes the credit for the development of DBX file extension.

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CF AD 12 FE

The DBX File can be opened in it's Email Client from which it is created. Following email clients create DBX and may be used to open it.

• Microsoft Outlook Express
• Microsoft Windows Mail
• Microsoft Windows Live Mail
• Mail App for Windows 10