We develop ourProducts to meet your needs and solve your problems.

“Thunderbird backup solution is meant to save the precious data of an MBOX file to a safe destination .”

Managing Director KernelApps

Salient Features

Know all outstanding features and integrated functions of the Thunderbird Mail Backup solution.

Backup Thunderbird Mailbox to PST

Backup Thunderbird Mailbox to PST The tool can export Thunderbird mailbox data to MS Outlook PST files. By this way, you can back up your Thunderbird emails with complete integrity. Backed up PST files can be safely transferred to any other location too.

Backup Thunderbird to Office 365

Backup Thunderbird to Office 365 This is an additional benefit that is offered by Kernel Thunderbird Mail Backup software. Users can directly export Thunderbird MBOX emails to cloud-based Office 365 mailboxes.

Export Multiple MBOX Files at a Time

Export Multiple MBOX Files at a Time With the MBOX backup tool, it is possible to select multiple MBOX files for backup. Users are provided with two options for selecting an MBOX file for conversion – Select Folder and Select File(s).

Complete Preview of Thunderbird E-mails

Complete Preview of Thunderbird E-mails The software provides a complete preview of the Mozilla Thunderbird emails. Using this feature, one can verify the emails and their metadata before exporting to PST or Office 365.

Selective Thunderbird Mail Backup

Selective Thunderbird Mail Backup The tool facilitates selective Thunderbird MBOX email backup. Users can filter the Thunderbird MBOX file data with different criteria such as To, From, Subject, Date range, etc.

Quick and Easy MBOX Backup

Quick and Easy MBOX Backup Just select the Thunderbird MBOX file, preview its emails & filter them, and save them in PST or Office 365 as required. Owing to its friendly GUI, this tool is suitable for technical as well as non-technical users.

Saving options like Gmail & Exchange

Saving options like Gmail & Exchange The software has even more options for saving the MBOX file data. Some are - email servers such as Exchange, Domino, & GroupWise, and web-based emails like Gmail, Yahoo, & Google Apps. Also, emails can be saved in DBX, EML, MSG, TXT, RTF, HTML, and MBOX formats too.

Supports all Versions

Supports all Versions The Thunderbird Backup tool supports all the versions of Mozilla Thunderbird and Outlook. It works with all Office 365 plans for backing up Thunderbird emails. Also, it backs up emails of MBOX email clients like SeaMonkey, Apple Mail, Eudora, Opera, etc.


Follow the below mentioned simple steps to migrate or backup Thunderbird mailbox file.
  1. Launch Kernel Thunderbird Mail Backup tool
  2. Select MBOX folder/files from the desired location
  3. Preview the MBOX file items
  4. Save the MBOX file to PST file or Office 365
The important requirement for installing the Thunderbird backup tool is that the user’s system must have MS Outlook installed.
Yes, you can export the MBOX content to multiple PST file using the split option of the tool. This feature allows splitting the PST file by size.
No, the import PST to Office 365 tool is compatible with all Office 365 editions.
Yes, you can export the MBOX content to Gmail using this tool. Also, you have many additional saving options like Exchange Server.

Software Prerequisites & Recommendations

About Software

  • Version


  • License Type

    Home, Corporate & Technician

  • Version Support

    MS Outlook - Office 365/ 2019/ 2016/ 2013/ 2010/ 2007/ 2003/ 2002/ 2000/ 98 and 97

System Requirements

  • Hard Disk

    50 MB of disk space

  • Memory

    64 MB RAM (128 MB recommended)

  • Processor

    Intel® Pentium Processor compatible (x86, x64) or equivalent

  • Operating System

    Windows - 11/10/8.1/8/7 /Vist a/XP/ 2000/ 98/NT /95 Windows Server 2016/2012 R2/2012/2008 R2/2008/2003 R2/2003

Software Guides

What customers say about

Kernel Thunderbird Mail Backup

(4.9 / 5) 537 Reviews

This software has a very simple and easy-to-use use user-interface; I like it so much. The price of the tool is also very affordable. I would like to recommend it.

N Mike

It is very affordable and secure backup software. It helped me to back up the Thunderbird mailbox to PST. Anyone can try it.

M Pollard

I like this Thunderbird mail backup software, which is very clean and functional as well as intuitive. You must try it.

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