Thunderbird Importer




Import MBOX to Thunderbird

Thunderbird Import Wizard to Add MBOX Files in Bulk

(Average Rating 4.7 Based on 120 Reviews)
  • Import MBOX, EML, EMLX, Maildir files to Thunderbird in batch mode
  • Allow to add MBOX Emails with Associated Attachments in Thunderbird
  • Support MBOX files of Mozilla Thunderbird, Gmail, Entourage Mail, Apple Mail, etc
  • Option for Date-Based Selective Data Conversion
  • Allow to Import Single or Multiple Files using Add Files / Add Folders Option
  • Maintains Folder Structure of Source File During Import
  • Import MBOX file into desired Thunderbird email profile / Local Folder
  • Mozilla Thunderbird installation is needed to complete the process
  • Thunderbird Importer tool is compatible with all Versions of Windows OS

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Import MBOX

Import MBOX to Thunderbird Multiple Account Types

Thunderbird has 2 types of mailbox accounts that can be configured and 1 native folder:

  • IMAP Account
  • POP Account
  • Local Folders (native)

Thunderbird Import wizard allows you to directly add MBOX file to Thunderbird POP accounts and Local Folders. IMAP has restrictions that prevent direct import. So, to import MBOX files into IMAP accounts, you need to import the MBOX file in Local Folders, then simply drag and drop the imported mailbox to the configured IMAP account. That's it!

MBOX Email Clients

Support All Thunderbird supported formats

There are several different versions of the MBOX format, and some email clients may use slightly different variations. The software has the capability to process MBOX files of all kinds. Other than MBOX, the tool can also import other formats supported by Thunderbird. Currently the tool supports following file formats:

  • MBOX files (with .mbox extension)
  • Thunderbird native MBOX file (no extension)
  • MBX files (Eudora & Pocomail)
  • MBS files (Opera Mail)
  • EML & EMLX files
  • Maildir files

The origin of these file does not hinder the processing and the overall Thunderbird import process.

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Advanced Features to Import MBOX to Thunderbird


Add MBOX Files in Bulk

The Thunderbird Importer wizard permits users to flawlessly transfer multiple .mboxs file in Thunderbird, all in one go. It is capable of supporting a file of 20+ email clients, which creates MBOX for email storage.


Maintain attachments of Emails

Software offers different approach to browse MBOX file in the Thunderbird Importer tool and maintains original email attachment.Users can choose an individual MBOX file or browse a folder comprising of multiple MBOX within it.


Import Maildir Files in Bulk

Using the latest version of Thunderbird Import Wizard, users can seamlessly import Thunderbird Maildir files into another account. Many Thunderbird users store data in Maildir format and this application supports importing Maildir into Thunderbird account.


Add EML / EMLX Files in Bulk

Different Windows and Mac email applications like Apple Mail, Windows Mail, Thunderbird create EML and EMLX files for individual email saving. Thunderbird users can import multiple EML files into Thunderbird with the help of this software.


Holds Folder Structure

The tool holds the on-disk folder hierarchy of imported MBOX files in Thunderbird. It is capable of importing nested folders present in MBOX file and thus, holding the structure throughout.


Transfer Complete Data

Thunderbird Import Wizard transfers all messages of MBOX file in the targeted mail client without single bit loss. You will import Gmail MBOX to Thunderbird with all Email attachments, meta properties like To, Cc, Bcc, sent time, received time, etc., all remains same till the end.


Supports All MBOX Email Clients

It is mandatory to have Thunderbird installed on the machine for working. Well, it is not important that users have to import MBOX mailbox to Thunderbird default configured email profile; Instead they can move data in their desired mailing profile.


Option for Date Filtering

Thunderbird Importer tool offers a smart feature to import MBOX to Thunderbird on the basis of selective importing procedure. If users want few essential emails to be imported in Thunderbird then, they can use ‘Apply Filter’ option. Mention the date range from which you want to move data.


Transfer MBOX to Desired Email Profile

The software provides extensive flexibility to its user that they can move the files into any account that is configured in Thunderbird apart from the default configured profile. Also, this tool does not impose any type of file size constraint, while performing the MBOX import process.


Supports All Windows Versions

Thunderbird Import Wizard supports all versions of the Windows Operating System i.e. Windows 11/10/8.1/8/7 and all below editions. Moreover, this tool supports both 32-bit as well 64- bit Windows Versions.

MBOX to Thunderbird Screenshots

4-Steps Working to Open MBOX File with Attachments.

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MBOX to Thunderbird Video

Watch Live How to Import MBOX Files into Thunderbird

Thunderbird Importer Software Specifications

Download Tool and Move MBOX Files to Thunderbird

Download Software

Size: 9.99 MB

Version: 5.0

MD5: 0c55e6e459c879172ec0f97ae89a15fa

Trial Limitations

Demo Version of Thunderbird Importer Software allows to move 25 items of each folder from MBOX, Maildir, EML, EMLX file.

System Specifications

Hard Disk Space
100 MB free space for installation

4 GB is recommended

Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz


  • Microsoft .NET framework 4.5 or above should be installed
  • Thunderbird installation is needed to move MBOX files to Thunderbird
  • Profile configuration in Thunderbird is mandatory to move MBOX files.

Supported Editions

  • OS: Microsoft Windows 11, 10, 8, 7 (32 bit or 64 bit) & Windows Server 2022, 2019, 2016, 2012 R2, 2008


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Order Now - Mozilla Thunderbird Importer Wizard

Features Overview of Free Thunderbird Importer Software & Full Version

Features DEMO Version PRO Version
Import Multiple MBOX Files in Thunderbird

Import Emails with associated Attachments

Import Selective MBOX Data

Auto-Loading Mozilla Thunderbird Profile

Windows 11, 10 & Below edition supported

Import MBOX, EML, EMLX, Maildir to Thunderbird 25 Items/Folder All Items
Cost FREE $29

Frequently Asked Questions

Common Query For Thunderbird Importer Software

Following steps will tell you how to import MBOX files:

  • Step 1: Install & run the Thunderbird Import Wizard
  • Step 2: Load MBOX file using Add File / Folder Option
  • Step 3: Set Date Filter to move selective data
  • Step 4: Click on Import to begin the process

A MBOX file is the mailbox file whose purpose is to organize bulk email messages collectively in an individual text file. This type of email file format saves data in a concatenated manner. Here, each mail is saved one after the another, originating from the ‘FROM’ header. Earlier, this file was used in Unix hosts but, with new inventions it is now supported by many email applications. In today’s date, there are around 20 + email clients that saves their data in MBOX file format. Some of them are listed below :

  • MozillaThunderbird
  • Apple Mail
  • Entourage Mail
  • PocoMail, etc.

The tool itself has the capability of listing all those email id’s that are set up in Thunderbird. You just need to click on the drop-down button of Select Identities and then, select the destination id.

Yes, of course, the tool supports MBOX files of all its supportive email clients. Basically, it is not dependent upon the origin from which .mbox file is generated. All what is needed that the source file should be having .mbox extension.

No, our tool functioning is to import MBOX to Thunderbird mail account. Until and unless, there is no profile configured in it then, where will tool move MBOX emails? Therefore, it is compulsory to have a profile configured in Thunderbird.

No, our import wizard is Windows-based, which is compatible on Windows 10, 8.1, 8, and all below versions.

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