How can I open DBX emails in Outlook when Outlook does not support DBX files?

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I have old Outlook Express mailbox files, but modern Outlook only works with PST files. I need to access those DBX emails in Outlook, including old conversations, sender details, received dates, and attachments.
 
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Outlook cannot open DBX emails because DBX was the storage format of Outlook Express. To view those emails in Outlook, you need to change the DBX mailbox into PST first, then add the PST file in Outlook.

Start with a duplicate copy of your DBX backup, not the original folder. If the files are from an old PC, check names like Inbox.dbx, Sent Items.dbx and any custom folders so you know what should appear later.

When Outlook refuses DBX files, GainTools DBX to PST Converter Software gives a proper conversion route by reading the Outlook Express mailbox, showing email preview and creating a locally saved PST that Outlook can open. After conversion, check sender details, dates, attachments and folder names before using the PST as your main archive.

The free demo is useful for checking few emails from each DBX folder before full conversion.
 
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You can not open DBX files into latest version Microsoft Outlook of any version including Outlook 2021, 19, 16, etc until you convert DBX files to PST format. This task can be easily done by using EmailsGuru DBX to PST Converter. It is specialized to do so without any data loss or formatting changes. It is designed or developed with modern algorithm, which makes makes it even suitable for no -technical background users to convert DBX files to PST format. It is Windows based utiltiy, offering new users a free trial before using paid version.
 
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You cannot open a DBX file directly in Outlook because it is an Outlook Express mailbox file, not an Outlook data file. The practical workaround is to first convert the DBX mailbox to PST, then open that PST in Outlook.

If you have the original DBX files, a converter can save you from moving the emails one by one. Mailvare Free DBX to PST Converter lets you choose a DBX file, scan and preview its contents, and export the mailbox as PST. It also supports attachments and mail properties, according to its product page.

After conversion, add the PST to Outlook and check the folders and a few messages before removing your original DBX files.
 
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