Description of Problem:

One of the most common ways that I think about my
mail is, "what messages do I have from my friends"
or, "what messages do I have from my group at work"

While it's possible to set up virtual mailboxes
with lists of usernames to search for, that gets
to be a complicated prospect that is difficult to
manage. On the other hand, the contact manager
already has those email addresses, and the concept
of user-defined catagories.

My feature-request is a wedding of these two
features (virtual mailboxes and contact
catagories) so that I can select mail where the
sender or recipient is in a specific catagory
(e.g. Personal or Business or a user-defined
catagory like the one I have for my co-workers).

PS: Virtual mailboxes are insanely useful already,
and I recommend switching to Linux to
Windows-using friends *just* for that feature of
this application. All of the other transition
headaches are worth it. Thanks guys!

Steps to reproduce the problem:
1. n/a
2. 
3. 

Actual Results:


Expected Results:


How often does this happen? 


Additional Information: