How to Import MBOX Files into Thunderbird

Follow the complete conversion guide for importing MBOX files into Thunderbird with Easy Steps

Mozilla Thunderbird is free desktop based email client which supports MBOX files to manage data. To import MBOX Files into Thunderbird, there are two methods available which help to understand complete processing. Follow any method which suits you


Import MBOX to Thunderbird – Method 1

Firstly download, install & run "Import/Export Tool" addon in your Thunderbird. You can download this addon with the help of following button.

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Step 1 :Then Open Thunderbird

Quickly Open Thunderbird Mail Client in your system

Open Thunderbird

Step2 : Click Import MBOX File option

Go to Tools menu >> Import/Export Tool >> Import MBOX File

click MBOX file option from Tools Menu

Step3 : Choose desired option to Import MBOX file

Then there will open a new Files MBOX Import Window, Choose "Import directly one or more MBOX files" option to import MBOX files and click on OK button

choose options to import MBOX file

Step 4 :Select MBOX files

Browse the desired location where you have saved MBOX files and Click Open Button.

select MBOX files

Step 5 : View MBOX files

Finally, all mbox files have been imported in your Thunderbird. Now you can view your MBOX files in Thunderbird

view MBOX files in Thunderbird

How to Import MBOX files to Thunderbird – Method 2

Step 1 : Open Thunderbird

Open Mozilla Thunderbird in your PC

Open Thunderbird

Step2 : Click Help

Go to Help Menu >> Troubleshooting Information

click Troubleshooting Information from Help Menu

Step3 : Click Show Folder

Then there will open a new tab in Thunderbird of Troubleshooting Information, go to Application Basics Section >> Show Folder

click Show folders

Step 4 : Click Local Folder from Thunderbird Profile location

After that there will open the profile location of Thunderbird, Click on Mail Folder >> Local Folder

click local folders from Thunderbird location

Step 5 : View Thunderbird User Profile Data

All mailboxes data are available in Local Folder in two parts – with extension (important-files.msf, trash.msf, etc.), without extension (important-files, trash, etc.), folder data are available in .sbd folder.

view Thunderbird profiles

Step 6 : Paste MBOX files

Now Copy all your mbox files from their saved location and paste at the Local Folder i.e. Inbox.mbox, Outbox.mbox, Sent.mbox, etc.

Paste MBOX files

Step 7 : View MBOX files in Thunderbird

Then re-open the Thunderbird application and you can see that all mbox files have been imported in it. Click on the MBOX file to view its mail contents.

view MBOX files in Thunderbird

If you are looking for a quick solution to import Thunderbird mailboxes into different file formats then go for Thunderbird Converter. It provides simple and efficient solution to convert Thunderbird user profiles data into multiple formats. For your help, free demo edition of the software can be downloaded and evaluated for its performance. Free demo allows conversion of first 20 emails from Thunderbird mailboxes into supported file format.

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Version: v5.0
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Price: $35