Poco Junk Mail FAQ - Removing messages directly from the server

Q: How do I and/or is it possible to remove the message from the pop server?
 
A:
I have used both filters and scripts to delete messages directly from the server. You need to detect the conditions to remove it either in the script or in a filter that launches the script.

Use the DeleteMessage command in a script that is run in pre-download mode to delete the messages from the server.