Regain Office 365 Backup Tool - 2026 Pricing, Features, Reviews & Alternatives

Regain Office 365 Backup Tool is a solution designed to help users protect critical Office 365 mailbox data from accidental loss, hacking attempts, or server downtime. With this tool, users can download and back up the entire Office 365 mailbox, including emails, contacts, calendars, journals, tasks, notes, and attachments, into multiple file formats such as PST, MBOX, EML, MSG, HTML, and PDF.

The software is built with algorithms that ensure complete data integrity during the backup process. It preserves the original folder hierarchy, email metadata, and attachments without any alteration. Users can perform full mailbox backups or apply filters based on date, subject, or sender to back up only the required items. This selective backup feature saves time and storage space while making the process streamlined.

Another highlight is the incremental backup option, which allows users to back up only the newly received data without duplicating previously saved files. This makes routine backups manageable. For businesses, IT administrators, and individual users, the tool supports multiple Office 365 accounts, enabling centralized management of data protection needs. The interface ensures that both technical and non-technical users can perform backups. Additionally, the tool offers compatibility with all Windows operating systems and supports the latest versions of Outlook, making it a versatile solution for diverse environments.