(The following is post MP1 just so that I don't scare the shit outta yas again). BTW, I would look into something similar for Email, for instance Andy Oliver's embeddable Mail Server. I'm also keen on writing JCA adapters for FTP and email. Both inbound and outbound. JCA has a pretty good abstraction and contract for pooling and XA and security integration. Once JBoss 5 comes around we'll be able to embed JCA into Java SE applications and Tomcat and maybe even WLS/Websphere. Another thing, once we have a good deployment, lifecycle, and component model for ESB, it should be fairly easy to write a POJO interface to JCA inbound and outbound adapters. We should be able to even do this with JBoss 4.x JCA and cut and paste relevant parts from MDB code. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4029072#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...