Check out Datavare Office 365 Backup software. It’s an multi functional tool which has an ability to perform backup, conversion and migration solutions. The tool will easily export your Office 365 mails to PST file format without any error.
For taking the backup of Office 365 mailbox on the Mac local drive and save the data into any file format like PST, MSG, EML, EMLX, MBOX, etc. The Mac user can make use of Office 365 Backup for Mac which is a great tool to use for downloading the emails data from Office 365 mailbox to local computer drive on any version of Mac PC. This software is very easy to use and anyone can operate it without any problem. This application all Mac OS versions.
Here I am going to share a professional tool to get a backup file into EML format from Office 365 mailbox, then I would recommend you try Shoviv Exchange Recovery Manager tool. It will help you to export Office 365 mailboxes into EML, PST, MSG, Office 365, and Live Exchange server. With the help of this tool, users can also export EDB, Live Exchange Server, and Outlook Profile stores to PST, EML, MSG, Office 365, and Live Exchange server.
To backup the Office 365 mailbox in Windows Live Mail email client then the user need to download the data in EML file format and make it happen by using Office 365 backup tool. This tool will download the data from Office 365 Mailbox to EML format which formally supports in Windows Live Mail email client. To get more information about this tool you can visit here:- https://www.softaken.com/office-365-backup-pro