The best way to take the backup of Office 365 account data is the
Office 365 Email Backup Software. This software allows you to take the backup in multiple file formats such as PDF, PST, EML, MSG, MBOX, and many more. It migrates Office 365 account data to Gmail, Thunderbird, AOL, IMAP, and other email clients. Additionally, the software maintains data integrity and folder hierarchy during the backing process and removes duplicates from the selected files before the backing process. It has an easy user interface.