Poco comes with a very powerful scripting facility. This facility can be used for many purposes, from automatically filing mail in respective mailboxes based on the subject and/or author to automatic vacation replies. Sophisicated users have even developed a simple ftp server using PocoScript. There are many other things that can be done with PocoScript, for a very incomplete list see the "Why should I learn PocoScript" article.
First time script users should read this note regarding how PocoScript and PocoFilters interact.
To learn more about using PocoScript browse the following tips or use the PocoScript Command Search utility developed by Juan de Fuca Software.