def archive_channel(self, channel, alert):
        """ Archive a channel, and send alert to slack admins. """
        api_endpoint = 'channels.archive'
        stdout_message = 'Archiving channel... %s' % channel['name']
        self.logger.info(stdout_message)

        if not self.settings.get('dry_run'):
            channel_message = alert.format(self.settings.get('days_inactive'))
            self.send_channel_message(channel['id'], channel_message)
            payload = {'channel': channel['id']}
            self.slack_api_http(api_endpoint=api_endpoint, payload=payload)
            self.logger.info(stdout_message)