Um...I don't think it's just this phone. I think plenty of development has gone into this. I like it personally because I can go to one place to see my messages from all 4 accounts I have on my BB. The only thing I didn't like was that SMS/MMS got lumped in there but an upgrade to the TIM Italy release fixed that!
I have never seen a way around this, though.
**EDIT--As stated above, you can hide this folder. At first I was figuring you can't.
Originally Posted by brucejr
Press ALT + the Home key (has the BlackBerry symbol). This will bring up the option to Hide an Application. You can simply hide those message folders you do not want to see.
I don't think the ALT key is necessary (or at least isn't on my Pearl) but you can select "Hide Icon" and it will not appear on your screen.