Shoviv Office 365 Backup and Restore is the best backup tool for export Office 365 mailboxes to PST. It takes a very fast backup of User Mailbox, Archive mailbox, and Public Folder. It has advanced features like Incremental Backup jobs, Scheduled Backup Jobs, and Item filter option. Shoviv Office 365 Backup and Restore can run multiple jobs at a time and works concurrently. The Software is also very handy in restoring backed up mailboxes from PST to Office 365. To check its working a demo version of the software is also available.
For more information visit - https://www.shoviv.com/office365-backup.html