It can be tricky to move MBOX files to Office 365 because MBOX files are used by email clients like Thunderbird and Apple Mail, and Office 365 is a cloud-based service. Direct manual transfer is hard and takes a long time, especially if the mailboxes are big. When I tried to move a number of MBOX files to Office 365, I encountered the same difficulty. It took a long time, and it was easy to mess up when you performed things by hand. After that, I utilised
TrustVare MBOX to Office 365 Converter, which made it very easy to
migrate MBOX to Office 365 . The application sends MBOX data directly to Office 365 accounts without modifying the email details or folder structure.
Key Features:
Moving MBOX files straight to Office 365
Keeps the same layout for the emails and the folder structure
Keeps attachments, metadata, and other email elements safe.
Works with MBOX files from a wide range of email programs
Moving is quick and safe with an easy-to-use UI.