I think you should try the best Datavare Office 365 Backup Tool that supports you to completely extract backup of Backup office 365 to PST, MSG, MBOX, EML and EMLX format without any problem. You can simply activate this application on all Windows versions such as 7, 8, 8.1, XP, 10 and so on. This tool is easily accessible with the basic knowledge of computer. Free demo version facility is available for user evaluation that allows saving first 10 items without any cost.
If you want to take a backup of your Office 365 Mailbox in Mac OS. You can use Office 365 Backup for Mac Tool, this tool easily works on Mac OS. And it allows you to backup Office 365 emails, contacts, and calendar to PST, MSG, EML, EMLX, and MBOX. The app gives only a few simple steps to achieve migration from Office 365 folder to the required format in any single and bulk mode just a few minutes. The software supports all versions of Mac OS (10.11).
For migrating the Office 365 mailbox data into Apple Mail the user need to download the Office 365 Mailbox data into MBOX file format which supports in Apple Mail email and easily been imported in that. Using Office 365 Backup Tool is a good option to choose for this process and make the easily migrated into MBOX file format and after that upload it into Apple mail email client. To know more visit:- https://www.softakensoftware.com/office-365-backup.html