Manually transferring MBOX file to Office 365 is a lengthy and complicated process. In this approach, you need to add your office 365 account with Thunderbird. Now, install ImportExportTools NG in Thunderbird and import MBOX file to Thunderbird. After that, move this file to Office 365 mailbox.
However, you can directly do it with Advik MBOX Converter. The software can import MBOX to Office 365 account in a few simple clicks. The software is efficient enough to complete the transferring process in a few simple clicks without any data loss. You can download the free version of the software and transfer MBOX file to Office 365 mailbox without any data loss.
Steps to Import MBOX File into Office 365
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Run this software on your system.
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Add .mbox file into software.
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Select mailbox folders and press Next.
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Choose Office 365 as a saving option.
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Enter your Office 365 account login details and click on Convert
The software will start transferring emails from MBOX file to Office 365 account.
