Duplicate emails in your MBOX mailbox clutter it and use up excess storage space. To remove duplicate emails from your MBOX mailbox, you can use duplicate remover software. This blog, explains an automated method for removing duplicate emails from MBOX files.
MBOX is a popular file format used to store emails with attachments in a single file and store emails in a text file.
MBOX files are supported by many email clients like Mozilla Thunderbird, Apple Mail, Opera Mail and more.
Reasons to remove Duplicate emails from MBOX files
Storage optimization: Duplicate emails in the MBOX mailbox take up unnecessary storage space, and deleting/removing duplicate emails frees up storage space.
Enhance Searchability: Deleting duplicate emails from the MBOX mailbox makes the search process of emails easy.
Improved Performance: By deleting duplicate emails from the MBOX file the overall performance of the MBOX email client improves due to cleaning of the unnecessary duplicate emails.
Smart solution to remove duplicate emails from MBOX files
The smart solution to remove duplicate emails from MBOX files is to use eSoftTools MBOX email duplicate remover software. This is the most effective and advanced tool that can delete/remove duplicates from the MBOX, MBX, MSF, and MBS files with a few clicks. Moreover, it previews the MBOX files and folders in the preview panel before removing duplicates.
Key features
- Smartly removes duplicate emails from single and multiple MBOX files at once.
- Provides three options for adding MBOX files into the software- Select MBOX file, Select MBOX folder and Auto-load Thunderbird profile( For Thunderbird users).
- Search and delete duplicate emails with two options- โWithin MBOX fileโ & โAcross all selected MBOX filesโ.
- Delete duplicate emails from the filtered emails by mail filter feature which filter emails according to Date.
- Remove duplicate emails from MBOX files of all email clients such as Apple Mail, Thunderbird, Opera Mail, etc.
- Designed to work on all editions of Windows operating system like Windows 11, 10, 8.1, 8, 7 and below editions.
Step-by-step approach of removing duplicate emails from MBOX files
Download and install eSoftTools MBOX duplicate Remover software in your system.

Click on the Add file/folder button on the top menu bar to add MBOX files and folders into the software.

Load and preview files/folders in the preview panel and select the file/folder from which duplicate are to be removed.

- Click on the Remove Duplicates button on the above menu bar and the next window will appear.

Choose any one of the file adding options- Select MBOX file, Select MBOX folder and Auto-load Thunderbird profile and click the Next button.

- Apply email de-duplication settings like email element selection, mail filter, across folder or within folder.
Select a saving location and click the Remove duplicates button.

Conclusion
In this blog, we have explained the reasons and automated methods to remove duplicate emails from MBOX files. Removing duplicate emails from MBOX files is essential to well organise the MBOX mailbox. The automated method described above is an easy and effective method to remove duplicate emails from MBOX files.
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