I have a few blackberry users who are having this issue. We have set up a BES enterprise email account on each phone, but a few users wanted their personal email as well so we added that as well using the basic email account adding feature.
Now both email account have icons on the menu, but both sets of emails are coming into the main folder. The second folder, however, is only being populated with the correct messages.
Now, I have looked at the email options. The only thing i found alluding to anything similar is that you can separate email from SMS, which i have tried selecting and deselecting and it only does as it describes with no effect to the other email address.
An answer would be appreciated! thanks.