Allow anyone to join without an invitation

This feature is only available to organization owners and administrators.

By default, users need an invitation to join. You can open your Zulip up so that anyone can join without an invitation.

Set default streams for new users.
Go to Organization permissions.
Find the section Joining the organization.
Set Are invitations required for joining the organization to No.
Set Restrict email domains of new users? to either Don't allow disposable email addresses (recommended) or No.
Click Save changes.

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