Office 365 Backup

Why do you need Office 365 backup?

Mimecast Cloud Archive and backup technology is critical for protecting against accidental or malicious loss of office 365 data and for complying with a wide variety of regulatory frameworks. In traditional on-premises environments, organizations often rely on best-of-breed hardware solutions and mail archiving software to achieve their backup objectives. When moving to Office 365, organizations may need similar cloud backup and third-party Microsoft 365 backup solutions to fully protect data and improve Office 365 disaster recovery capabilities.

Why is it essential to back up Microsoft Teams?

A robust backup strategy for Microsoft Teams can benefit an organization in a multitude of ways. Backups also provide valuable insights into the data being secured while also lowering risk and improving workflows.

Safeguard against accidental deletion

Inadvertently deleting data, including important messages, files, or even channels in Teams, could cause significant disruptions. A Teams backup keeps data recoverable and minimizes the risk of downtime to employees or operations.

Satisfy legal and compliance requirements

Entities operating within highly regulated industries have frameworks they must operate within, and often face audits and investigations to ensure they're in compliance. Many of their communications have mandated data retention policies for specific periods. Backing up Teams communication facilitates meeting these compliance requirements and demonstrates transparency.

Aid in eDiscovery

During legal proceedings or investigations, companies may be required to retrieve, export, and present relevant data from within Teams as evidence for a court of law. Having backup data from Teams can expedite an eDiscovery process for efficient investigation and presentation of evidence.

Analyze historical Teams data

Collaborative patterns, productivity metrics, and workflow insights are all valuable types of data that can be gleaned from a Teams backup. This information can be used to improve processes and help organizations with employee insights.

Prepare for disaster recovery

In the event of an unforeseen circumstance like a system failure, power interruption, cyberattack, or other infrastructure outage, a backup of Teams will ensure an organization can recover crucial data and maintain operations.

Perform routine data assessment

Often, the process of performing a backup gives businesses the opportunity to review and identify which data is essential and needs to be protected and preserved. Enterprises can keep clean data records and organize their information in a meaningful, intuitive way that makes for better data management practices.

Simplify employee onboarding

Backups of historical Teams conversations, files, channels, and video conferences can be invaluable resources for new employee onboarding. New personnel can begin training and gain valuable context without diverting the labor hours of experienced employees to train them.

Protect against insider threats

Employees with a grudge or intent to harm can be dangerous to a company's ability to conduct business as much as inadvertent deletion or data corruption. Backups can serve as a safeguard against such intentional acts and can save companies hours and expense when bad actors attempt to harm them.

Better backup for Office 365 mailbox items

When moving to Microsoft Office 365, most customers expect native Office 365 email backup and recovery tools to be enough. However, built-in Office 365 backup solutions may leave data recovery gaps, especially when organizations need to protect against data loss, corruption, malicious intent, or long-term recovery needs.

For teams comparing Microsoft 365 backup options, third-party backup software, or an independent backup tool, the key limitations include:

• Native tools may not fully protect 365 emails and collaboration records.
• End-user restore is limited and often requires IT support.
• Office 365 remains vulnerable to technical failure, human error, outages, downtime, and data loss.
• Guidance from the Microsoft community may help with basic recovery, but native recovery alone may not protect long-term email data across regulated workflows.
• Organizations that need to save office messages beyond default recovery windows may need a more resilient archive.

To truly protect vital email assets, organizations must backup Office 365 mailbox items with third-party solutions that provide more powerful functionality and protection. That's exactly what thousands of organizations worldwide achieve with Office 365 archive mailbox capabilities from Mimecast.

How do you restore Teams data?

To restore data with Teams' native tools, it must be located in the user's mailbox in Recoverable Items, or in the SharePoint locations for the Recycle Bin or version history, and within the default recovery period to be successfully recovered. Some organizations may also need to preserve related Microsoft exchange records, outlook data file exports, or another backup file when native restore options are not enough.

If a data retention policy or legal hold is in place, the data will be preserved in its default Microsoft 365 storage location according to the table above.

To restore Teams data natively, navigate to the storage location, locate the deleted items, and select "Restore." If the data has been permanently deleted or the retention period has expired, it cannot be recovered through standard methods. In that case, you may need to contact Microsoft support for further assistance.

To restore Teams data using a third-party backup and retention tool, follow the instructions within that application for restoring preserved data.

Essential Office 365 backup solutions for Teams management

By adhering to these best practices, organizations can build robust and reliable backup strategies for Microsoft Teams to reduce the risk of data loss and create a path to business continuity in the event of service interruption or disaster. The right email backup software can also help teams preserve related mailbox, Teams, and Microsoft exchange data in a more accessible format.

Identify what data should be backed up

Before attempting a backup, it's crucial to identify the types of Teams data that should be protected. Do you need:

• Chat messages and conversation history
• Files and attachments shared in chats and channels
• Wiki content and One Note notebooks
• Meeting recordings and transcripts
• Teams settings, structure, and membership information

By understanding the data types, you can pinpoint their storage locations (Exchange, SharePoint, OneDrive) to ensure a comprehensive backup approach.

Create a disaster recovery plan

Disaster recovery can mean continuing operations in the event of a temporary power outage or something more significant like a natural disaster that requires weeks of damage recovery.

A well-defined disaster recovery plan is vital for effective data protection. The plan should outline the steps in case of data loss or disasters, including:

• Roles and responsibilities of the recovery team
• Communication procedures to stakeholders
• Recovery time objectives (RTOs) and recovery point objectives (RPOs)
• Detailed procedures for data restoration from backups

A clear plan minimizes downtimes and increases the likelihood of a smooth recovery.

Emphasize the importance of regular backups

Your data is only as good as its latest backup. It's an ongoing process, not a one-time event. The most recent data should be protected and as recoverable as possible.

Establish a backup schedule that aligns with your organization's data protection requirements and the rate of change to the data in Teams.

Implement data retention policies that keep incremental backups in case any one version becomes corrupted. This allows you to restore data from a different point in time if needed.

Continuously test the backup and recovery process

Testing your backup and recovery procedures demonstrates their reliability and effectiveness in preserving your Teams and other collaboration data.

Testing should include:

• Verifying the backup data's integrity
• Simulating data recovery scenarios
• Validating data restoration success to its original or new location

The process should identify any failures or issues with backups or recovery processes. If there are no problems, you're assured your data is recoverable and accurate from its backup state.

Keep your backup solution up to date with any updates, latest features, and capabilities. Microsoft frequently enhances and evolves the Teams and Microsoft Office 365 platforms and underlying services, so your backup solution must account for those changes and adapt accordingly.

Improve Office 365 backup with Mimecast

Microsoft Office 365 is a powerful business tool for collaboration and productivity, but Office 365 backup capabilities may not be sufficient for every organization.

For organizations seeking to support their Office 365 environment with an easy and affordable backup solution, Mimecast offers a cloud-based suite of services for email security, continuity and archiving that provide comprehensive tools for Office 365 backup.

Mimecast extends backup and archiving beyond email and Teams to capture communications from Slack, Zoom, and other collaboration platforms in real time through native API integrations, preserving full message context, conversation threading, and metadata in native formats. Microsoft's approach routes third-party communications through Exchange mailboxes via complex connectors, introducing processing delays and stripping away valuable contextual data.

Office 365 backup solutions from Mimecast

Mimecast's all-in-one subscription service enables organizations to manage and protect business email more easily while reducing the risk, cost and complexity usually associated with email management solutions. Instead of relying on a manual process to export office mailbox content or select office items for one-off recovery, Mimecast provides a scalable cloud archive designed for long-term access, search, and restoration.

Mimecast Enterprise Information Archiving delivers mailbox-level compliant archiving for an independent, verifiable Office 365 backup. Mimecast's solution provides a highly scalable and resilient cloud archive for email, files and Lync IM conversations, along with automated tools that allow administrators to manage retention policies, mailboxes, e-discovery and litigation requests more easily.

Faster eDiscovery and smarter search

In real-world enterprise side-by-side testing, Mimecast completed eDiscovery tasks 6.7x faster than Microsoft Purview, with search and export completed in approximately 1 hour 12 minutes compared to 8 hours for Microsoft. This can dramatically reduce the time legal and compliance teams spend on investigations.

Beyond speed, Mimecast's purpose-built AI models, trained specifically on enterprise communication patterns, deliver highly accurate, relevant search results by analyzing sentiment, language, and content. This helps compliance teams surface genuinely relevant data faster, rather than sifting through the false positives generated by Microsoft's generic AI classification models.

Analyst-recognized governance and archiving

Mimecast is recognized as a leader in Gartner's 2025 Magic Quadrant for Digital Communications Governance and Archiving, with Gartner specifically noting Mimecast's unified, AI-driven risk visibility and event-driven, AI-native architecture.

Mimecast enables users to access and search archive data or restore deleted emails without help from IT. Users get fast access to any email sent or received – a 7-second search SLA means information contained in email is always at their fingertips. IT administrators get ultimate control of their Office 365 backup, managing policies and performing administrative global search from a centralized console.

Complete forensic context

Mimecast preserves complete forensic context, including deleted messages, edit histories, and full conversation threads, ensuring investigators and compliance teams have the complete picture. Microsoft Purview, by contrast, cannot show deleted or edited messages within a compliance review thread without escalating to a separate eDiscovery case, and permanently deleted messages beyond the retention window may be unrecoverable.

Secure storage and predictable costs

Mimecast ensures data integrity and security through encrypted, secure storage in multiple geographically dispersed data centers, with triplicate copies of each stored for built-in redundancy. With pricing based on the number of employees rather than the volume of email, Mimecast can help to significantly lower the total cost of ownership.

Benefits of Mimecast's Office 365 backup

Mimecast supports and improves Office 365 backup by providing:

• Flexible, policy-driven retention of email, files and Lync IM conversations.
• Fast Outlook email search, enabling employees to be more productive.
• Comprehensive support for compliance, e-discovery and litigation requests, including legal hold, case management and data export.
• Complete archive access logging including searches and message views.
• Access to archives available on any device, from any location.
• Fast deployment through pre-built native API integrations, with policy changes applied in real time.
• Centralized protection for Office 365 email, archive, and email client access, helping users find and recover important messages without relying on local backup files.

Mimecast also augments Office 365 backup with Mimecast Mailbox Continuity, a service that provides uninterrupted access to email and calendar information, even when Office 365 is experiencing outages.