How to Export MBOX File from Thunderbird to Office 365 Manually or Automatically

Are you MBOX file user and want to export MBOX file from Thunderbird to Office 365 directly? Then you are at right place at this time, this blog can help you to overcome from this how to export MBOX file from Thunderbird to Office 365 instantly issue. In this blog we will get a manual trick for doing this task because any direct migration solution is not available here.

The reason for unavailability of direct Thunderbird to Office 365 migration solution is that Thunderbird supports MBOX file format while Office 365 doesn’t have any import option for MBOX file format. And Thunderbird doesn’t have export option for O365 cloud account, so using the manual trick ((how to export MBOX file from Thunderbird to Office 365)) users can achieve MBOX files into O365. Because the maual trick has some limitations so we will also define an automated solution which can export Thunderbird MBOX file to OWA directly.

Manual Trick for exporting Thunderbird Files to Office 365

Thunderbird files can be transferred in Office 365 by a manual trick but it is in multiple parts so if you want to know about it then you can follow it –

Part 1. Export Thunderbird in EML file format & Save in Windows Live Mail

• Open Thunderbird on your desktop screen.
• Select all email messages which you want to export in Office 365.
• Drag them and drop at any place. The mails will be saved in .eml file format.
• After that install Windows Live Mail and open it in your desktop screen.
• Create a folder in Windows Live Mail and go to saved .eml files.
• Then select them and save in WLM by drag & drop way.

Part 2. Export Saved .EML files from Windows Live Mail to Outlook

• Now install Outlook and open it on your desktop screen. (Make sure Windows Live Mail & Outlook both should install in same machine.)
• Now go to Windows Live Mail and File Menu >> Export >> Export Messages
• Then Choose Exchange Server option.
• Choose mail folder which you want to save in Outlook.
• Click on OK button migration processing will start and complete within few minutes.

Part 3. Export Imported Data as PST from Outlook

• Open Outlook on your desktop screen.
• Go to File Menu >> Open & Export >> Import/Export
• Choose export to a File option.
• Then after clicking on Next button, click on Outlook Data File…
• After that choose desired location to save PST file. Click on Finish button.

Part 4. Import PST File in Office 365 by Shipping Drive Method

After that users have to import PST file in Office 365 and for that users have to follow the method by this web url – https://www.pcvare.com/import-pst-to-o365-drive-shipping.html

Limitations of Manual Trick

No doubt that manual trick can save Thunderbird data to Office 365 but it has lots of limitations which users should know before going with it –

• It is very lengthy process.
• It takes lots of time to follow multiple parts.
• Any missed step can lose their data.
• Non-technical users cannot follow this method.
• Sometimes, it fails and doesn’t save data in Office 365 from Thunderbird.
• It is very rishky and may fail.

How to Export MBOX File from Thunderbird to Office 365 – Automated Solution

If you don’t want to go with manual trick then you can go with PCVARE MBOX Converter that has option to export MBOX file from Thunderbird to Office 365. It can export MBOX files from Thunderbird to Office 365 perfectly. It also supports “I am Admin” option that can export MBOX files of Thunderbird into other user account of Office 365 cloud account. It allows for exporting multiple MBOX files of Thunderbird into Office 365 and also maintains all mails properties – metadata, attachments, images, formatting, unread status, etc.

To clear entire doubts regarding Thunderbird MBOX files to Office 365 migration, download the automated MBOX migration tool and convert 25 emails from each selected MBOX file into Office 365 for free of cost.