If you are looking for a top Office 365 backup tool in 2025, check out the MacSonik Office 365 Email Backup Tool. It is a complete solution that lets you back up Office 365 mailboxes to PST and other file formats such as PDF, MBOX, EML, and CSV, keeping your data safe and secure. It has a user-friendly interface and allows you to move emails and other data from Office 365 to PST quickly. To help avoid mistakes, the software lets you preview your emails before starting the export process.