POP3 Question: Check email subject before downloading all messages?

Hi,
I have read the pop3 tutorial and i could easily connect to my gmail, get all the emails downloaded. Works great!

However - i am wondering if i can do the following :

- Get a list of messages
- Check for subject line , download only the message i want and delete it

I do not want to download all the emails every time - is there a way to do the above with the current pop3 library?

Thanks
flyingbag