DokuWiki allows individual users to “subscribe” to page changes. When a page is changed all users who have subscribed to that page will receive an email describing the changes. The email shows the changes in unified diff format, a sample email is shown at the bottom of this page.
The subscription facility is controlled using the subscribers configuration setting. It is turned off by default.
Note for wiki admins
Be careful in switching this facility on. In a busy wiki, with both frequent changes and many subscribers, emailing the changes to those subscribers can put a heavy strain on the webserver. In a public wiki it may also provide unscrupulous people with a way to send spam to your wiki's users.
RSS Feeds provide an alternative (and lighter) mechanism for receiving details of updates to the wiki.
... place a sample email here