How to Easily Import Maildir into Thunderbird Profile / Account

Shini Mohan | January 10th, 2018 | Tips

James Geller: I want to import Maildir to Thunderbird. But, the acceptable file format in Thunderbird is MBOX. Can please anyone help me to find the solution to convert Maildir File to Thunderbird ? Thanks in advance.”

Are you also looking answer to the same problem? If yes then, you are at right place.
Maildir: The Maildir format is used to store email messages. In Maildir, every message is stored in separate file with a distinct name, and every folder is a directory. There are 3 sub-directories inside a Maildir folder: Cur, New and Temp
Thunderbird: Thunderbird is a desktop-based email client developed by Microsoft. It is an open source email client that runs on various platform. The file format supported in Thunderbird is MBOX and MSF

Limitations of Importing Maildir to Thunderbird:
Even though Mozilla Thunderbird is a widely accepted desktop-based email client, but still it possesses some drawbacks. The major limitation associated with Thunderbird is Mozilla Thunderbird does not allow the user to directly import any file type. However, Thunderbird allows to create Maildir but, does not provide any facility to import Maildir into Thunderbird ore even .

Need to Import Maildir to Thunderbird

Consider the following user queries which will make it clear that why anyone would like to switch from Maildir to Thunderbird:

“I had been using maildir files from a long time. But, as the workload is increasing, the number of emails send and received are also increasing. It became quite hectic to manage single mails. Therefore, I need to switch to an email client where I can organize my emails and other data properly. I think of Mozilla Thunderbird as the best option. Please, can you tell whether is it possible to import Maildir to Thunderbird or not? If yes, then how?”

“I am a forensic investigator and I got Maildir file as an evidence. To read this, I have to open it. But, the problem is I use Mozilla Thunderbird as an email client. It is very urgent because I need to submit the report tomorrow evening. Can anyone offer the solution for to convert Maildir File to Thunderbird. Thanks in advance”

“I have 20 GB of Maildir files and I want a solution to import Maildir into Thunderbird for saving backup file for future. Please help me!!”

Techniques to Convert Maildir to Thunderbird:

To transfer Maildir to Thunderbird, there are 2 best possible solutions. These are discussed in detail.

#First Solution

This approach is a 2 step solution. These steps are:

  • Convert the Maildir to MBOX file format
  • Import the MBOX file to Thunderbird

1. Convert Maildir File to Thunderbird MBOX file format

Maildir file format can be imported to MBOX with the help of third-party tool like Maildir Converter . It is the professional solution to  convert Maildir to MBOX file format. The working of the tool is explained as follows:
1. Browse the Maildir file which you want to export.
2. Preview the items of selected Maildir file.
3. Export the files and choose MBOX as required file extension of resultant file
4. Save the obtained MBOX file.

2. Import MBOX file to Thunderbird

If a user needs to import MBOX to Thunderbird, do not forget to install  SysTools Thunderbird Import Wizard Tool . You need to go through the following steps as mentioned below to migrate via MBOX or directly Maildir files into Thunderbird Profile. You need to Download the Exe of Tool, from below Link:

#Second Solution

In this solution, directly convert Maildir file to Thunderbird with the help of professional solution like Thunderbird Import Wizard. According to the experts, it is the master solution to copy maildir files to Mozilla Thunderbird email client. Working of the tool is explained as follows:

1. Open the Thunderbird Import wizard and Add maildir files or folders

2. Once the file is added, a user can preview all the files. Click on Next.

3. Select Mails and Click on Import

4. All the imported Maildir emails can be seen on your Thunderbird account.


Need to convert Maildir to Thunderbird arises as Thunderbird offers data to be organized in a proper manner. To import maildir into thunderbird, there are 2 best possible solutions. One is to convert Maildir to MBOX file and then import this MBOX file to Thunderbird. Another solution is to directly migrate maildir to Thunderbird with the help of third-party tool like Thunderbird Import Wizard. This is the professional solution to convert Maildir file to Thunderbird.