i have a BES pushing my email to my phone.. as well as a gmail account setup
they each have their own folder.. my issue is that when someone sends my gmail account email, it shows up in both...and both folders get the notification
You can hide the Gmail folder by highlighting it and then hitting the menu key and then 'hide'
All emails will just go into the 'Messages" folder, but you can tell which one it is being sent to from the header as it sayd "To: [email protected]" or "To: [email protected]"