Smart folders: new top-level condition, 'All' or 'Any'

I'm afraid this is a bit too problem-specific. I'm not even sure I
understand the details of your desired conditions.

Maybe you should split your problem into 2 smart mailboxes. MailMate
encourages you to have simple conditions in each smart mailbox (by
making it easy to base a smart mailbox on a set of existing smart
mailboxes). You could make a smart mailbox with your All condition set
and then narrow it down with your Any conditions in a different mailbox
(or do both in 1 smart mailbox).

Otherwise, I'll probably need an example that is easier to understand.

[state:closed]

No huge problem, just annoying if I want to modify an existing mailbox fast.

Scenario

The issue comes up whenever I try to enhance an existing set of expanding ('Or') conditions by a restricting ('And') condition or several of them.

'From you' OR 'From me' OR 'From Lighthouse'

Then, I realize I need to restrict this by date, or any other condition.

Thus, the existing set needs to be coordinated with a restricting ('And') condition.

('From you' OR 'From me' OR 'From Lighthouse') AND 'After 12-01-2010'

Work-arounds

Yes, your work-around works, too, but it's even more complicated if I just want to get a new modified mailbox which is relatively independent.

Alternative solution: ability to move several conditions at once, avoiding the multiple dragging of conditions.

Independent mailboxes

Btw, I want to avoid a complicated architecture of smart mailboxes, especially dependency on mailboxes which are quickly deleted.
I'd prefer to be able to know what a mailbox does without checking some others. Thus, I prefer 'duplicate and modify'.

Anyway, I'm sure MM won't get as sluggish as my iTunes, prior to v10 and my killing some of those huge 'smart' playlists.

Th