Fast and secure
backup for
Outlook
Outlook Calendar
Outlook Contacts
OneDrive for Business
SharePoint
Teams Files
Why Microsoft’s
Built-In Tools Aren’t Enough.
Microsoft 365 does not include a traditional backup solution. Instead, Microsoft provides native retention and recovery features such as recycle bins, version history, and retention policies. These tools are designed to support availability, but they do not safeguard you against disaster, ransomware, insider threats or compliance audits. Under Microsoft’s Terms and Conditions their Shared Responsibility Model states that customers are responsible for protecting their own Microsoft 365 data. This means your essential business communication and collaboration are vulnerable, unless you have a dedicated Microsoft 365 backup solution in place.
Microsoft's Limited Retention Windows
Deleted emails and files are only recoverable for a short time. Once retention periods expire, data is permanently lost.
Retention Is Not Backup
Microsoft's retention policies focus on compliance, not recovery. Restoring specific emails, files, or folders can be slow, complex, or impossible.
Same Security Boundary
Microsoft 365 data and retention settings live inside the same tenant. If an admin account is compromised, attackers can delete data and disable protections, leaving no clean recovery copy.
No Protection Against All Threats
Native tools do not reliably protect against ransomware, insider threats, mass deletion, or sync errors discovered weeks or months later.
Why Use a Third-Party
Microsoft 365 Backup Solution
Comet's dedicated Microsoft 365 backup solution provides true, independent data protection.
Complete control over your retention period to meet compliance and business requirements.
Learn more
Watch In Action
FAQs
Any user with a Microsoft 365 account is counted as a user. Only active users are available for selection from the Microsoft 365 Admin Center. Mailboxes of guest users, deleted users, eDiscovery, and Journals are not available in the Admin Center selection list for backup.
Comet charges based on the number of Microsoft 365 accounts, including unlicensed users, shared mailboxes and SharePoint sites.
It’s running on the end-user’s Comet Backup device, for complete privacy and to support local backup destinations. Another option is to run a Comet Backup device in the cloud on behalf of your protected customer – Azure has the best connection to Microsoft 365.
Yes, from a single device multiple Protected Items can be created, each pointing to a different Microsoft 365 tenant organization.
Yes – If you choose “Backup everything”, the list of mailboxes will be scanned at the start of every backup job. Alternatively, you can select individual mailboxes using any of the following selections:
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Choose to back up all users or only selected users
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Backup all users except for the selected users
No, the backup and restore operations are performed by the Comet Backup device. The Comet Backup device must be online to perform a backup or restore job. If the end-user does not have a suitable endpoint device, you could consider hosting a device on their behalf in the cloud.