How are you using the Windows 2003 POP3 Server?

I saw a link on the “hellomate“ MS Exchange blog to a post singing the praises of the POP3 Server that comes in Windows Server 2003 and it reminded me that I wanted to write about this and ask people to comment or write, and tell me what you are using the POP3 server for, and how you like it. 

For Exchange admins, the POP3 server can be confusing, because the “Manage Your Server” wizard that comes up when you install Windows 2003 offers to let you select the “E-mail server” role for the server, and when you do that, it installs the POP3 service and the SMTP service.  Unfortunately, the POP3 service is incompatible with Exchange, so Exchange 2003 setup will tell you to remove the POP service before it allows you to install Exchange. 

If you are using the POP3 server, what do you wish it did, and how would it change how you use it?  My team is responsible for the future of this service (among other things), so you're getting an opportunity to talk directly to the right person!