Block messages from unknown senders in Google Chat
WorkspaceDecember 17, 2025
Block messages from unknown senders in Google Chat
What’s changing
We’re introducing a new setting in Google Chat that gives users more control over who can invite them to 1:1 conversations and spaces. While the default setting allows invitations from anyone, users can now choose to restrict incoming requests to known senders only. This restriction can be done for 1:1 conversations, spaces, or both.
If a user restricts this setting, they can only be contacted by someone outside their organization if they’ve previously interacted with that person or if the person is in their contacts. Invitations from users who do not meet this criteria will be sent to spam.
Note that this setting has no impact on messages between users of the same domain; these invitations will not be sent to spam regardless of whether the users have had prior conversations.
Getting started
- Admins: There is no admin control for this feature.
- End users: Visit the Help Center to learn more about restricting messages from unknown senders.
Rollout pace
- Rapid Release and Scheduled Release domains: Full rollout (1–3 days for feature visibility) started on December 16, 2025
Availability
- Available to all Google Workspace customers and users with personal Google accounts
