Backing up several Microsoft 365 mailboxes manually can be difficult because each account requires separate configuration and export steps, making the process inefficient for organizations managing multiple users. Administrators often need a centralized solution that can protect multiple mailboxes while preserving emails, attachments, contacts, calendars, and folder structures. The SysInfo Office 365 Backup Tool allows users to back up multiple Microsoft 365 mailboxes simultaneously without performing individual exports for every account. It provides bulk backup capabilities that help administrators save mailbox data locally in formats such as PST, EML, MSG, PDF, and MBOX. The tool maintains mailbox folder hierarchy during the backup process and provides options like date-based filtering, duplicate removal, and folder selection to customize the output. It also offers backup status tracking and reports to monitor completed and pending mailbox operations. With support for large-scale mailbox backup requirements, the tool helps organizations simplify Microsoft 365 data protection and reduce the effort involved in manual mailbox exports.