Migrating emails from one email client to another or Office 365 is a complex task that requires a lot of time and investment. In the case of Thunderbird, there are no direct methods to migrate MBOX files (used by Thunderbird) to Office365. However, you could migrate Thunderbird MBOX to Office 365 in a two-step procedure. For this, you require to move MBOX emails to Outlook and then import them to Office 365. But this manual method is effective only when you require exporting a limited number of emails from MBOX to Office365. Here is how you can succeed in migrating MBOX data from Thunderbird to Office 365.
If needed, you can preview the emails in Outlook. The next step is to upload the Outlook PST files to Office 365 with the help of "Office 365 Import Service". You will need to use a tool named 'Microsoft Azure AZCopy Tool' that will help to upload the PST. The steps are given below in brief:
The manual method is fair enough to export MBOX items to Office 365 but with some significant limitations. Migrating emails is a tedious task for users without any technical background. Another major drawback is that there is no guarantee that it will conduct complete and accurate MBOX to PST or PST to Office 365migration. There is a chance that you might miss some mail or document during the process. Plus, the manual method is not effective for multiple file migration as the process is time-taking and risky.
There is a way by which migration from Thunderbird MBOX to Office 365 file can be performed quite efficaciously. This is by using a third-party migration tool like Kernel MBOX to Office 365 Migrator. The migration can be smoothly accomplished in just three steps. The steps involved are explained below:
The tool has been designed to overcome all the impediments faced during the Thunderbird MBOX to Office 365 migration. This tool is free from any technical glitches and instantly exports MBOX files to Office 365.