I have my personal domain e-mails sent to Gmail and then forwarded (via filter setup) to my BB instantly.
Gmail has great spam filters, you "train" them, for lack of a better term, by marking what is spam. Next time that stuff does not get thru, I have found it to be very good.
Search for a member "stinsondog" and use his tips sheet to set up Gmail. No more pop, very little spam, free and instant BB e-mail-nice