MacUncle OST to Thunderbird Wizard

  • Transfer the whole OST files to Thunderbird Webmail.
  • Import the Outlook / Exchange OST files within few steps.
  • No limitation on OST files while importing to Thunderbird.
  • Dual Options to add OST file to the Software panel.
  • Supports both selective & batch transfer of OST files.
  • Migrate the OST file without converting it to a particular format.

  • Compatible with Mac OS 10.8 Mountain Lion and all latest versions.
  • Safe & Secure Virus Total Safety Score: 100%

Import OST to Thunderbird on Mac – 3 Simple Steps

MacUncle OST to Thunderbird Converter takes a few steps to migrate OST files

Install the Tool

Download the Mac OST to Thnderbird Converter. Select the Outlook OST file using Add File(s) and Add Folder(s). Then press the Next button.

Select Thunderbird Webmail

Now select Thunderbird Webmail from Select Saving Option and set all the required fields and then press the Export button to Proceed.

Get the Result

The live OST to Thunderbird Conversion takes place and then after completing a few messages and a log report of the conversion shows up.

Traits of OST to Thunderbird Tool for Mac

Here are some software features of the OST to Thunderbird Converter for Mac OS.

Great Software GUI

To Import OST files using OST to Thunderbird Converter for Mac is very simple to do as the program offers the ideal solution for importing Outlook OST to Thunderbird Webmail. All the conversion phases as described in the section above, such as selecting OST files, choosing File format, entering the credentials, etc., are established for the user's convenience.

>Import Along with Attachments

MacUncle OST to Thunderbird Migrator for Mac OS is developed with an advanced technique using which one can easily transfer OST email files and the documents attached to the emails. Whatever the document format is you can easily import the Mac Outlook files along with attachments to Mozilla Thunderbird directly. Get the files without any modification.

Dual Options to Select OST Files

The program has two distinct choices, such as Add File(s) and Add Folder(s), to pick the OST files. All functions are the same as selecting the system's OST files and the difference is that the Add File(s) allows the user to select OST files while Add Folder(s) helps pick folders that hold OST files.

Batch Transfer of OST Files

Both the Add File(s) and Add Folder(s) options help to pick all OST files together and then convert them at once, resulting in transferring of OST to Thunderbird as batch. OST file batch conversion can be achieved by using the options that can be performed without wasting time.

Safe and Secure Process

MacUncle's OST to Thunderbird Converter for Mac OS is designed for quick transfer of Exchange OST to Mozilla Thunderbird using advanced techniques. The conversion to OST takes place without making any modifications to the email files as it contains many files and folders. Any number of files can be converted to the files without alterations.

Maintain the Email Structure

As Outlook OST files are email files thus contains various email messages plus components such as the Subject, To, From, Date, Signature, etc. all describe the email file together. Mac OST to Thunderbird Converter permits to import the whole email files by maintaining the mailboxes' properties and elements with any alteration.

Maintain Mailbox Folder Hierarchy

Using this guide, the program will maintain the original mailbox folder and subfolder structure after transferring Mac OST emails to thunderbird. The method ensures the qualified preservation and maintenance of the original mailbox Folder. This will help you search your preferred emails and locate them without any uncertainty.

Mac OS Based Application

OST to Thunderbird Converter Mac OS works perfectly on the Mac Machine. Thus, this tool is compatible with Mac OS 10.8 and all the latest versions. The supported Mac OS versions are10.15 Catalina, 10.14 Mojave, 10.13 High Sierra, 10.12 Sierra, OS X 10.11 El Capitan, 10.10 Yosemite, 10.9 Mavericks, and 10.8 Mountain Lion.

System Requirement

Get an Overview of OST to Thunderbird Migrator Tool Features – DEMO and Licensed Version

Software Name: Mac OST to Thunderbird Converter
Processor: Minimum 2.4 GHz Processor
RAM: Minimum 1 GB
Minimum Hard Drive Space: 30 MB
Operating System: X OS 10.8 Mountain Lion and all the latest Editions.

Software Specifications

  • Support: 10.15 Catalina, 10.14 Mojave, 10.13 High Sierra, 10.12 Sierra, OS X 10.11 El Capitan, 10.10 Yosemite, 10.9 Mavericks, and 10.8 Mountain Lion
  • Processor: 1 GHz Processor (2.4 GHz is recommended).
  • RAM: 512 MB of RAM (1 GB is Recommended).
  • Hard Disk Space: 10 MB of Free Hard Disk Space Required.


Size: 38.0 MB, Version: 1.0

Product Guides

Software Guide Installation Uninstallation EULA

Trial Limitations

Test the Demo version by migrating 25 OST files to Mozilla Thunderbird quickly which helps to understand the working of the software.

Electronic Delivery

The delivery of product is automated. You will receive an email containing both the link to download the product and the activation key within few minutes after payment confirmation.

Request For Software Customization

If you need to customize Mac OST to Thunderbird Converter or need additional features then, Request Quote

Watch How to import OST files to Thunderbird on Mac OS
Watch Step by Step Video of Mac OST to Thunderbird Converter

What Customers Are Saying

Verified Purchase Reviews - Mac OST to Thunderbird
Frequently Asked Questions

Follow the simple conversion steps of OST files, -

First Download and Setup OST to Thunderbird Converter on Mac OS –

  • Step 1: First, Start the tool & upload OST file using Add File(s) or Add Folder(s).
  • Step 2: Click on the Next button.
  • Step 3: Select Thunderbird as saving format from the option.
  • Step 4: OST to Thunderbird process is running, please wait for a while.

At last, it will automatically open the destination path so that users can easily retrieve their resultant emails.

To import complete OST files upgrade the application to Pro version. Using Pro version one can easily transfer unlimited OST files.

To import files without any limitation get the Pro version by purchasing the license key.

Yes, Of Course, OST to Thunderbird Application for Mac OS is compatible with OS X 10.8 Mountain Lion and all the latest versions of macOS.

Yes, Of Course, OST to Thunderbird Converter Mac OS is compatible with OS X 10.8 Mountain Lion and all the latest versions of macOS