... default ? WebNotify . This is a subscription service to be automatically notified by e-mail when topics change in this _default web. ... Each TWiki web has an automatic e-mail notification service that sends you an e-mail with links to all of the topics modified since the last alert. Users subscribe to email notifications using their WikiName or an alternative email address, and can specify the webs/topics they wish to track, Whole groups of users can also be subscribed for notification. ...