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How to Take Backup of Mozilla Thunderbird Emails in Office 365 Webmail?

Thinking of how to take backup of Mozilla Thunderbird emails in Office 365 cloud database, then no need to think anymore. Here I am suggesting you the best and trust-worthy solution for easily taking backup of Mozilla Thunderbird email data in Outlook web app without any error.

What is Mozilla Thunderbird?

Mozilla Thunderbird is an independent cross-platform email client, news client, RSS and chat client application that is developed by Mozilla Foundation. It stores all their email data in MBOX file format. The Mozilla Thunderbird email client application supports to run on a number of platforms such as Windows, Linux, and macOS.

What is an Office 365?

MS Office 365 is a Software as a Service (SaaS) way out that contains Microsoft Office 365 and other services like email and collaboration, from Microsoft’s cloud server. Microsoft Office 365 offers desktop functionalities and is existing by subscription. It gives a complete set of software tools and services that facilitate office documentation, communication, and management tasks. No upfront setting up or integration is needy, other than an internet connection and a supporting Web browser.

Key Reasons to Backup Thunderbird Emails in Office 365

Some of the major reasons are described in the below section which forces a user to take a backup of Mozilla Thunderbird data in Office 365:

  • Facilitates added features of data share, storage, collaboration, and communication.
  • Backup and save Thunderbird email files into O365 to use Microsoft cloud services or monthly rental.
  • Migrate from Mozilla Thunderbird to Office 365 to open and read emails by using a browser or any device like mobile and tablet.
  • Another security and data storage benefits with MS OWA could servers.
  • Various subscription packages for each and every organization based on size and necessity.
  • Get various Office applications like Microsoft Word, Excel, Access, Exchange Server, Skype, etc.

Backup Thunderbird Mail Files in Office 365 Cloud with MBOX to Office 365 Backup Tool

There are a number of different solutions exist in the digital era such as manual ways and professional ways. But most of the time users find manual method is too-lengthy and time taking process for taking backup of Mozilla Thunderbird emails in Office 365 webmail.  And the manual method is only for those users who have complete technical knowledge about the supported applications like Thunderbird and Office 365. Overall, manual way is a tricky and a problematic way to connect Thunderbird to Office 365 database and using the manual method, there is no guarantee of success result after completing the process.

So, here we are offering you an excellent way to resolve the query of how to take backup of Mozilla Thunderbird emails in Exchange Online (Office 365).

Read Also : Import MBOX File to Outlook 2019

Step by Step Process to Save Thunderbird Email Files in O365

  1. Download and launch MBOX to Office 365 program on your system
  2. Load Thunderbird MBOX files by clicking on the Add File or Add Folder option and see the preview of selected Thunderbird files in the software preview pane.
  3. Click on Export button and select the saving option as Office 365 to save Thunderbird email files in Outlook web app.
  4. Now choose saving path where you want to save by clicking on the Browse option and then click on Convert to start the process. Within a minute a new window will display showing the “Conversion Done Successfully” message.
  5. Press on the OK to finish the process.

Why Choose MBOX to Office 365 Tool to Connect Thunderbird Data to Office 365?

Following are some beneficial features mentioned of the software MBOX to Office 365 that makes the entire Thunderbird to Office 365 migration easy:

  • Offers preview option to view selected Thunderbird emails before starting the conversion.
  • Supports batch conversion mode to backup bulk emails from Thunderbird to Exchange Online at once.
  • Compatible with all Windows operating systems including Windows 10, 8.1, 8, etc.
  • Simple to use by every home user and technical user to perform the migration from Thunderbird to O365.
  • Keeps all data integrity in exact form during the conversion of Thunderbird emails in Office 365.
  • Supportable for all MBOX based email clients to save MBOX emails in Outlook web app.
  • Provides 100% precise result after finishing the conversion.


In this blog, we discussed a few facts about Thunderbird and Office 365 and why users need to know how to take backup of Mozilla Thunderbird emails in Office 365 with attachments. After that section, we also described the best method to successfully save Thunderbird mail files in O365 cloud database. If you have any kind of doubt about this MBOX to Office 365 program, then you can check its working by using its free trial version, which allows moving first 20 emails from Thunderbird mailbox to Office 365.


Related Articles


  1. MBOX to PST Converter to transfer single as well as multiple MBOX files to Outlook. This is the best GUI based application that exports entire MBOX data to PST format. User can use this solution on the large mailbox and perform the conversion for Outlook 2019, 2016, 2013, etc.
    For more info:

  2. Download ZOOK MBOX to PST Converter to batch convert MBOX to PST format to access the entire mailbox data in Outlook. It is the safe solution to export MBOX to PST format for Mac Mail/Apple Mail, Mozilla Thunderbird, Eudora, Entourage, and many more MBOX based email clients. It supports all Windows version i.e. Windows 10, 8, 8.1, 7, and all below versions. Overall, it is the best suited solution to convert MBOX to PST format and access their MBOX data in Outlook without losing any data. Download MBOX to PST converter and efficiently export multiple MBOX files to PST format in few moments.
    Explore More:

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