I'm Rohit Kumar, a software developer at SysInfoTools, where we build tools for email backup, migration, and data recovery. One of our tools is the Office 365 Backup & Restore Software, which lets users save Microsoft 365 mailbox data — emails, contacts, calendars, tasks, and notes — locally in formats like PST, PDF, EML, MBOX, MSG, and CSV. It also restores PST and OST files directly back into Office 365 mailboxes, which makes it useful in both directions. A free demo is available that processes up to 50 emails per folder so you can test it before purchasing.
