How do I deploy Pebble?
Installation on most JSP 2.0/Servlet 2.4 containers should be as simple as dropping the pebble.warfile into a specific directory in order to deploy it. Here are the steps required to deploy Pebble into Tomcat 5.5.x.
...
What follows are some instructions for specific web/application servers.
Tomcat 5.5.x
To enable e-mail integration so that Pebble can send e-mails whenever people leave comments, copy the activation.jar and mail.jar files from the lib directory of the Pebble distribution into $TOMCAT_HOME/common/lib/.