def METHOD_NAME(
    realm: Realm, user_email: str
) -> None:
    message = _(
        "A new member ({email}) was unable to join your organization because all Zulip licenses "
        "are in use. Please [increase the number of licenses]({billing_page_link}) or "
        "[deactivate inactive users]({deactivate_user_help_page_link}) to allow new members to join."
    ).format(
        email=user_email,
        billing_page_link="/billing/#settings",
        deactivate_user_help_page_link="/help/deactivate-or-reactivate-a-user",
    )
    send_message_to_signup_notification_stream(
        get_system_bot(settings.NOTIFICATION_BOT, realm.id), realm, message
    )