Much of the email I get is actually not from users directly, but generated by some automated system in response to some event. We are all used to getting these kind of emails - if we sign up on a new Internet sit, buy tickets online or somebody throws a sheep at us on Facebook . Since email is nearly ubiquitous and has many powerful tools for sorting, filtering, archiving or processing messages, it is a natural channel for delivering such automated notifications. Since we set up an email distribution system in the last 2 episodes of our series on startup software development infrastructure, we can make use of it as well to distribute event notifications from the key systems in our software development workflow, which are the issue tracking and source code version control systems - Trac tickets and svn respectively in our case. To enable email notification for every change to a trac ticket which concerns us, we only need to edit the notification section in the Trac config file at /dat...