Archive vs. delete in Teams: A guide to staying organized

Inactive teams are inevitable in Microsoft Teams. But when projects wrap up or departments restructure, leaving those workspaces untouched can cause bigger problems than just visual clutter, like unmanaged access, outdated content, and unnecessary sprawl across Microsoft 365.

A big part of keeping your tenant clean and organized is finding a reliable way to manage unused teams. That’s where archiving versus deleting teams comes in. While both options help reduce clutter, they serve very different purposes—and each affects user access, long-term retention, and what happens to the team’s underlying Microsoft 365 Group, SharePoint site, and files.

In this guide, we’ll break down the differences between archiving and deleting a team in Microsoft Teams, explore when to use each, and share best practices for managing inactive teams and the Microsoft 365 resources tied to them across your organization.

What happens when you archive a team in Microsoft Teams?

Archiving a team in Microsoft 365 puts it into a read-only, inactive state. The team stays visible to members and guests, who can still view past channel messages, files, and tabs. But all active collaboration is paused: no new posts can be made, and existing messages can’t be edited.

While the Teams interface becomes read-only, it’s important to remember that archiving only affects the Teams layer. The underlying M365 group and all its connected services (like the group mailbox and Planner) remain intact. Because the team’s files live in SharePoint, you have to specifically select the option to make the SharePoint site read-only during the archiving process if you want to block further file edits and uploads.

Since these resources stay active, content from archived teams remains discoverable in Microsoft Search and can still be resurfaced by Copilot, depending on your organization’s edit access and retention policies. That’s why it’s critical to ensure permissions are properly scoped before archiving—outdated or overly broad access can still expose content unintentionally.

What happens when you delete a team in Microsoft Teams?

Deleting a team in Microsoft Teams removes the workspace entirely—including its connected Microsoft 365 group and associated services like the SharePoint site, group mailbox, and Planner plans.

When a team is deleted:

• The Microsoft 365 group and its content enter a 30-day soft-delete period, during which the team can be restored by an admin.
• After 30 days, the group deletion becomes permanent. While the team and its connected services are removed, retention policies or eDiscovery holds may preserve copies of the content for compliance purposes.
• Users immediately lose access to the team and all related resources.
• Any files, conversations, or tabs that need to remain available move it to another location (like a different SharePoint site or OneDrive) before deleting the team.

Deleting a team is a good way to clean up truly obsolete workspaces, but it requires careful review to avoid unintentionally losing important data or breaking links to connected services.

Archive vs. delete teams: Key differences and use cases

This table breaks down the core differences between creating a Microsoft Teams archive or deleting the team entirely.

When to archive

Archiving is the right option when a team is no longer active but its content might still be useful down the line. An archive preserves the team’s structure, files, conversations, and access and freezes activity so the team is in a read-only state, keeping everything intact without allowing new activity.

Use archiving when:

• A project has wrapped but may serve as a reference for future work
• You need to retain access to content for knowledge sharing or audit purposes
• The team may become active again later but doesn’t need day-to-day collaboration right now

Note: Archiving alone doesn’t satisfy compliance or retention requirements. It simply freezes collaboration. If your organization is subject to data retention or legal hold obligations, you’ll need to apply formal Microsoft 365 compliance policies to ensure protection.

When to delete

Deleting a team is appropriate when the workspace no longer holds business or compliance value and you’re sure the content won’t be needed going forward. 

Use deletion when:

• A team is redundant, abandoned, or created in error
• Files and conversations have been reviewed and are no longer required
• You need to reduce storage and streamline your M365 environment

When you delete a team, you’re deleting the underlying Microsoft 365 group. By default, the group and its connected services—including the SharePoint site, group mailbox, and files—enter a 30-day soft-delete period, during which an admin can fully restore the team and its content. Once this 30-day window closes, the deletion is permanent. But retention policies or legal holds can override this timeline; if a team’s sites are under retention, the data won’t be fully purged until the specified retention period expires, even if the team itself is no longer accessible.

Since the team and its data can’t be recovered after the soft-delete period, be sure to take these steps before deleting:

• Confirm with team owners that no important content remains
• Move anything worth keeping to another location (like another SharePoint site or OneDrive)
• Document the deletion in line with your M365 governance policy

4 best practices for managing inactive teams

The choice of deleting or archiving a Microsoft team shouldn’t happen ad hoc—it should be part of a consistent, well-defined lifecycle management strategy. Without clear policies, inactive workspaces can pile up, increasing risk, cluttering your tenant, and making governance more difficult.

Here’s how to build a structured, repeatable process for managing inactive teams across Microsoft 365.

1. Establish clear criteria for archiving or deletion

Define what counts as an inactive team in your environment. For example:

• No messages or file activity for 90 days
• No assigned team owner
• Project or event end date reached

Make these thresholds explicit in your governance documentation so all admins and team owners are working from the same playbook.

2. Review content before deletion

Taking a few final review steps helps reduce the risk of losing business-critical content. So before deleting any team, team owners should confirm whether:

• Any files or conversations need to be retained
• Content needs to be migrated to another SharePoint site or OneDrive
• Tabs connected to apps or systems need to be created elsewhere

3. Use reporting tools to identify inactive teams

Relying on manual checks isn’t scalable, especially as the number of teams in your environment grows. Use reporting tools to flag low-activity or unowned teams and validate whether archiving or deletion is the right next step.

Microsoft’s built-in activity reports offer basic insights, but tools like ShareGate give you deeper visibility into team usage, ownership, and lifecycle stage.

4. Document your policies in your governance frameworks

Your data governance and compliance frameworks should include standardized criteria and procedures for managing inactive teams. This includes:

• What qualifies a team for archiving versus deletion
• Who’s responsible for reviewing and approving changes
• Where content should be moved before deletion
• How retention and compliance policies are applied

Standardizing these steps simplifies decision-making and ensures your M365 environment stays clean and compliant over time.

Why Microsoft 365 visibility is essential to making the right Teams archiving decisions

Effective lifecycle management starts with visibility. You can’t make informed decisions about archiving or deleting a team in Microsoft Teams if you don’t have a clear picture of its activity, ownership, and purpose. 

Visibility becomes even more important as AI tools like Copilot surface content from across Microsoft 365—including archived teams. Without it, outdated or broad access can surface content in search results or AI that should have been restricted. That makes governance harder, not easier.

Microsoft’s built-in tools offer a starting point. But as your tenant scales, blind spots emerge, like inactive teams without owners or dormant workspaces that slip past manual reviews. ShareGate Protect gives you the visibility to spot these issues early, helping you take informed action and keep your Microsoft Teams environment clean, secure, and aligned with your governance strategy.

Ready to simplify how you manage and clean up Microsoft Teams? Request a demo to see how ShareGate can help.