To enable targeted e-mail in an application, the application must run an instance of atg.nucleus.servlet.InitSessionServlet. For example, the web.xml file for the atg_bootstrap.war application includes the following lines:

<servlet>
  <servlet-name>InitSessionServlet</servlet-name>
  <servlet-class>atg.nucleus.servlet.InitSessionServlet</servlet-class>
</servlet>
<servlet-mapping>
   <servlet-name>InitSessionServlet</servlet-name>
   <url-pattern>/init-session</url-pattern>
</servlet-mapping>

This servlet handles the requests to /dyn/init-session, and, as its name implies, initializes a session.