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Thunderbird to CSV – Export Thunderbird Emails to Excel CSV File

Brandon Smith | Modified: 2021-04-05T08:09:26+00:00
export thunderbird to excel csv

Regardless of the reasons to export Thunderbird emails to Excel CSV format, there are two methods to do this:

  1. Free Method
  2. Professional Solution

The free method to convert Thunderbird to CSV is to install and use the ImportExportTools NG add-on on your machine (Mac and Windows). It is an easy to use method and is completely free of cost but you cannot avoid losing some of the vital parts of your messages in the resultant CSV file. Also, it will discard all your attachments. You can read this article for its limitations and see if it satisfies your conditions.

The Professional solution uses the tried and tested Mac MBOX Converter software to convert Thunderbird emails to Excel CSV files. It ensures that each and every section of the email message is covered in the spreadsheet. But, you will have to purchase the license of the tool to use it.

Let us read the methods in detail.

Free Method to Convert Thunderbird to CSV File

Note: Make sure to download and install the ImportExportTools NG add-on in your Mozilla Thunderbird email client.

  1. Open Thunderbird and right-click on the mailbox that contains emails to be converted to CSV file.
  2. Select ImportExportTools NG option and choose Export all messages from folder >> Spreadsheet(CSV).
  3. Save the emails on your machine in a single CSV file.

As you can see, this process is very simple and easy. But, it does have its fair share of problems as well. Analyze them from below and then figure out if it is suitable for you or not.


When using this method to export Thunderbird emails to Excel spreadsheet, the resultant CSV file may contain only partial data. Take these screenshots for example:

SS 1: You can see that the complete message, and the fact that multiple contacts in the “To” row.

original email message

SS 2: But here, only one contact is displayed. Also, the message body is nowhere to be found.

resultant csv file

This is just the beginning. Go through this list to view all the limitations that we came across while using the free method:

  • Partial contacts displayed in the CSV file
  • No message content (body)
  • An entire column with just the word = “Subject:”
  • Character limit of 50 imposed on all the actual Subject column

So, it is much better to use the professional method than depend on this free method that actually cost you more than you can imagine.

Professional Solution to Export Thunderbird Emails to Excel CSV File

To get complete content in your CSV file after Thunderbird to CSV conversion, it is imperative to use the professional MacWareTools MBOX Converter. It has a plethora of options to help you throughout the conversion process.

Steps to Convert Thunderbird Mail to Excel CSV File:

Note: Make sure to export the Thunderbird emails into MBOX file(s), since the software requires MBOX file for conversion.

Step 1: Download, Install and activate MBOX to CSV converter on your machine.

Download Now Purchase Now

Step 2: Click on Add File button.

add files

Step 3: Browse, select and add Thunderbird MBOX files from the system.

list all files

Step 4: Select CSV format.

select csv

Step 5: Apply Date-Range filters in Advance Settings.

apply date filters

Step 6: Click Export button to start exporting Thunderbird to Excel CSV format.

export thunderbird emails to excel

Once done, you can open the CSV file on your machine and view all the email data arranged in proper columns. DO with it what you want.

open csv file

The CSV file will have the same name as the mailbox folder.

Benefits of Using the Tool

There are various benefits of using the tool when compared with the free method:

  • Process multiple Thunderbird mailbox files at once
  • Complete email message is transferred to the CSV file
  • All items are neatly arranged in proper columns
  • There is date-range filter to filter out emails that fall in a particular range of dates
  • Attachments are extracted from MBOX file in separate folders – delete them or use them as per requirement

Final Verdict

There are two methods to export Thunderbird emails to Excel file. The free method is easy to execute but has limitations that point towards loss of data. Hence, it is recommended to opt for the professional tool that has been a trusted companion for users over many years. With this software, you can easily convert emails from Thunderbird to CSV format.