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MacUncle
Thunderbird Converter

(Average Rating 4.6 Based on 1828 Reviews)

Thunderbird Converter is a standalone tool that allows users to seamlessly export Thunderbird mailbox data to standard email file format or document format. The software enables complete, free conversion of emails, contacts and calendars without any data loss or file size limitation.

  • Convert Thunderbird Mailbox in Email Formats: EML, EMLX, PST, MSG
  • Export Mailbox in Document Formats: HTML, MHT, CSV, PDF, DOC, TXT, DOCX
  • Move Thunderbird Mailbox Directly to IMAP, O365, Gmail, Outlook.com
  • Automatically Detects Thunderbird Configured Profile or Browse Manually
  • Separate Option to Convert Emails or Convert Contacts and Calendars
  • Keeps Meta Details: Email Header, File Header, Folder Structure, Mail Body

Thunderbird Converter - How it Works

Convert Thunderbird Mailbox Using MacUncle Thunderbird Converter

Start the Tool

Download Thunderbird Converter for Mac OS and set up the tool right away. Choose any of the options, either select auto-select Thunderbird files or browse Mozilla Thunderbird files manually. Then, click the Next button to proceed.

Select Export Format

Now, from the select saving option choose any of the file formats – email format, document format, or IMAP option. Users are free to choose the saving format and then, choose an appropriate destination path to save the converted Thunderbird mailbox.

Get The Resultant File

To proceed press the Export button to initiate the conversion on macOS. Right after the conversion completes the tool notifies with multiple messages such as successful process completion and trial version limitations.

convert thunderbird emails

Advanced Thunderbird Mailbox Conversion Made Simple

Standalone Software to Export Thunderbird Emails

MacUncle developed a standalone software to perform Thunderbird mailbox conversion. The tool allows users to export complete data even without Thunderbird.

Advantages of Thunderbird Converter

  • Simple UI: User interface of this software is quite easy to understand.
  • Malware Free: The software .exe file is tested and verified for malware.
  • 24X7X365 Support: For any technical assistant MacUncle provides round the clock support.
  • Lifetime License Validity: Buy Thunderbird converter just once and use it for lifetime.

Thunderbird Converter — Features

Read More About The Tool to Export Thunderbird Emails on Mac OS

Simple & User-Friendly GUI

Thunderbird converter for macOS will offer a platform to migrate emails from Thunderbird profile in a few clicks only. Right from the starting, selecting Thunderbird files, opting for an appropriate saving option, to browsing a destination path, can be performed simply. Tool offers simplest way to export mailbox without any limitation.

Convert Thunderbird Mails in Batch

Thunderbird export wizard gives the space to convert the single file as well as multiple files from Thunderbird on Mac Machine. One can add the Thunderbird files in the software panel using Add File(s) or Add Folder(s). The folder option will allow the user to choose the complete email folder whereas the file option helps to add single or multiple Thunderbird emails.

Export Thunderbird Emails in 8+ Formats

Thunderbird converter is an all-in-one software that comes with options to save in different file formats. Using this software user can convert email files from Thunderbird to PST, Thunderbird to PDF, Thunderbird to TXT, etc. All the mentioned format conversion gives a perfect result. This can be done without the assistance of any other software.

Preserves Email Components

The user's main concern during conversion is whether tool will change the structure or components of the email files. The Mac Thunderbird converter software is designed in such a way that it does not interfere with the email components such as To, Cc, Bcc, From, Subject, Date, Inline Images, Signature, Headings, Text, Color, Hyperlink, and so on. Even after the conversion, the email structure and components remain unchanged.

Perform Conversion with Attachments

MacUncle Thunderbird migrator for Mac will keep the email attachments intact during the conversion of email files. As the attachments are the most important part of email files, the tool will convert the Thunderbird data with attached documents. The attachments such as PDF, image format, GIF, PPT, etc. All the data are well preserved, as a result, to produce accurate files.

Offers Multiple Naming Option

Thunderbird converter allows user's to apply File Naming option. User can rename or select a particular pattern to name the converted Thunderbird files. The naming convention is a combination of Subject, Date (Year, Month, date), From, etc. The following are the options: From + Subject + Date (yyyy-mm-dd), From + Subject + Date (dd-mm-yyyy), Date (dd-mm-yyyy) + From + Subject, and Subject + Date (dd-mm-yyyy).

Freedom to Browse Destination Path

Thunderbird converter allows users to convert email files to various formats in an intelligent manner. The tool allows you to specify the destination path as Desktop. The browse button can be used to change the location to any desired path. Wherever the destination location is, the tool will open the location immediately after the process is completed.

Mac OS Compatible Software

Thunderbird migrator is compatible with 10.10 Yosemite, 10.11 El Capitan, 10.12 Sierra, 10.13 High Sierra, 10.14 Mojave,10.15 Catalina, 11 Big Sur, 12 Monterey, 13 Ventura, 14 Sonoma, macOS 15 Sequoia, and macOS 26 Tahoe. There is no external application support required to execute the process. No other specific requirement is needed by the Thunderbird File Converter. The setup can be installed on any Mac PC right away without any interruption.

Thunderbird Migrator - Specification

Hardware and Software Requirement to Launch This Thunderbird Converter Tool

Convert Thunderbird Files in Batches

Version: v25.12.2
Size: 63.34 MB
Release Date: March, 2026
Software Download: Download Now


Trial Limitations: Thunderbird converter free trial version allows Mac users to convert a maximum of 25 emails from Mozilla Thunderbird to a selected file format. However, the full version has not such limitation.


Hard Disk Space: 400 MB of free hard disk space required
RAM: 512 MB of RAM (1 GB is Recommended)
Processor: Apple Silicon M-series (M1 or later)


Platforms: macOS 26 Tahoe, macOS 15 Sequoia, 14 Sonoma, 13 Ventura, 12 Monterey, 11 Big Sur, 10.15 Catalina, 10.14 Mojave, 10.13 High Sierra, 10.12 Sierra, 10.11 El Capitan, and 10.10 Yosemite.


Product Guide: Software Guide   Installation   Uninstallation   EULA  


Engage with Thunderbird Converter's Interface Experience

Click on any image to view the full-screen walkthrough

select email or contact option
choose any thunderbird
choose a saving option
convert thunderbird emails

Software Feature Comparison Thunderbird Converter

Understand the Difference Between Freeware and Pro Version of Thunderbird Converter

Features

Trial Version

Full Version
Convert Thunderbird Emails

25 Items / Folder

Unlimited

Export to EML, MSG, MBOX, PST, etc.

Batch Thunderbird Conversion

Preserve Folder Hierarchy

Maintain Email Metadata

Selective Email Filters

Priority Software Updates

24*7 Free Technical Support

Price

Free

$29

 Download

 Buy

Thunderbird Converter Tool - Video Tutorial

Video Tutorial to know Step-by-Step Process for Migrating Thunderbird Emails

We Specialize in Assisting Customers

Check Ratings and Reviews of Thunderbird Converter.

Performance

90%

Customer Satisfaction

93%

Output Accuracy

100%

Frequently Asked Questions

Find Answers to Common Mac Thunderbird Converter Queries

4 Steps to Perform Thunderbird Mailbox Migration

  1. Step-1: Install Thunderbird Converter and Launch
  2. Step-2: Add Thunderbird Mailbox into Software Panel
  3. Step-3: Select One Export Option from List of 15
  4. Step-4: Browse Path and Hit Export to Start Conversion

  • Step 1: Start Mac and open the Finder window
  • Step 2: Now, you can click on Go Menu and then navigate to Go to Folder. Else, you can directly use Command+Shift+G in order to open Go to option
  • Step 3: Here, type or paste ~/Library/Thunderbird/Profiles/(Profile name)/. After that enter the profile name you want to open in place of profile name. In case you are unaware of the profile name, remove the profile name part from the path
Thunderbird profile folder

No, there is no size limitation for the Thunderbird files you choose. The software offers free edition by which you can convert maximum of 25 mails to different file format, for more conversion you must purchase the license key.

Yes, of course, Thunderbird Converter is compatible with macOS 10.10 Yosemite and all the latest versions of macOS.

Yes, the software has a separate PDF Saving Option which will allow to export Thunderbird emails on Mac to separate PDF file.

Migrate Thunderbird to Apple Mail account using the IMAP option. Enter the credentials to transfer emails directly to your Mac Mail account.

The Thunderbird Converter has multiple saving options out of which choose the *.csv format and continue the rest of the procedure. Click here to know more about the process: How to export email from Thunderbird to CSV Format?

What Customers Are Saying

Mac Thunderbird Converter - Verified Purchase Reviews