Download the MBOX Converter and install it on your system. Run the tool as an administrator. Click on Continue.

Click On:

• Select Profile: If you want to fetch all Thunderbird profiles from the system with MBOX emails.
• Select File(s): If you want to fetch all Thunderbird profiles from the system with MBOX emails.
• Select Folder: To add a folder with all MBOX emails in it.

Afterward, click Select file(s), browse to your MBOX files, select the file to convert, and click Open.

On the other hand, if you click Select Profiles, your Thunderbird profile will be imported automatically on the panel.

After that, on your screen, you can review all your selected MBOX files. If not needed, you can exclude them with Remove Selected, and if you don’t want any files, click Clear List.

After finalising all the MBOX files, which you want to convert, select one by one, or you can tick Select All. Then, click Proceed.

In the left corner, a tree structure will appear with all the folders in it having your MBOX files. Click Expand All Folders to expand all the folders.

Once expanded, you can click on Collapse All Folders to collapse.

You can enter any keyword in Search Folders, and it will show specific results/folders in the tree structure.

Then double-click on any folder in the tree, and a table will appear with content. In the Advanced Search box, you can type any keyword to find related data. You can filter it further based on To, From, and Subject.

If you want to check the content of any email, double-click on that Email. You can preview the mail with the file content (HTML Body, Plain Text, Headers, MIME, Raw HTML, and Attachment)

In case the preview on the tool fails, use Open in Browser(if preview fails) to view the content on the web.

Once done, select the folder from the tree structure to convert and click on Proceed.

This tool comes with different file formats, but you need to secure emails as a PDF, so select PDF document(.pdf) as the file saving format.

This tool provides some basic filters to ease the task. These are:

• Date Filter: To set a date range to export MBOX files data for a particular time period.
• Naming Policy: This feature allows you to set a name for the file to be saved. It comes with multiple options, like Subject, Date, From, and other formatting.
• Custom Output Folder: This feature lets you save your file with a desired unique name.
• Skip Existing Exports: You can skip the files that have been exported earlier and proceed with new emails only.

You get more unique filters that make the conversion smooth. Listed as:

• Attachment Handling: It allows you to receive your attachment file in three different ways: separately, added in same file, or to save the file without attachments.
• Remove Duplicate Emails: To skip similar data in the MBOX files on the basis of To, From, Subject, Body, and CC.
• PDF Size Restriction: You can set a maximum of 500 MB size for your resultant PDF file.

You can Browse the output location where you want the converted file to be saved in your system.

As the last step, click on Start Export to convert MBOX files into PDF.

When the export process is complete, click Close. Then, click Export Log to get the report in CSV format. If you want to export more MBOX files, click Start New Export.