# Allow anyone to join without an invitation {!admin-only.md!} By default, users need an invitation to join. You can open your Zulip up so that anyone can join without an invitation. {start_tabs} 1. Set [default streams](/help/set-default-streams-for-new-users) for new users. {settings_tab|organization-permissions} 1. Find the section **Joining the organization**. 1. Set **Are invitations required for joining the organization** to **No**. 1. Set **Restrict email domains of new users?** to either **Don't allow disposable email addresses** (recommended) or **No**. 1. Click **Save changes**. {end_tabs}