A POP3 client not configured to keep a copy of messages on the server, as soon as retieve a message send a DELE commando with the number of the just retrieved message. Then, at the end of the POP3 session, the clent sends a QUIT command, wich order POP3 server to close the conection and delete the messages marqued with DELE command.

So, I'm wondering if it's possible to tell Dovecot to actually delete the message when receiving a DELE command instead of marking it for deletion after the QUIT.

Or is any other POP3 server capable of doing this other than Dovecot. (running on CentOS of course)