[martyp]

Not sure if it's possible to get something that would integrate with the e-mail feature of the phone, I'm thinking it's have to be like a routing system through a web based spam filter...

I checked with my e-mail provider and I can't identify the spam the way I'd like to, I really would like to block by keywords rather than sender as I get the same subject but from loads of spoofed mail addresses...

The closest solution I've been able to find is this one:
SODA3 - Spam filter for POP3 Mobile Email

Anyone know of any other methods/apps at all?

[eagle-slayor]

I never heard any type of application for this, maybe only online programs that do that. I believe GMail checks for spam, and then sends to inbox, and you can see the inbox in your POP3 client on the default email client on the phone