A shortcut for showing and hiding the folderpane would be a cool supplement for
QuickFolders.

Accepted. Not sure if this needs to be configurable, I am thinking of hard
coding it to [F9] as this seems to be free and easy to find even when typing
blind. What do you think?

I think you are right.
[F8] shows details and [F11] shows the calendar pane therefore [F9] should work
 well.

(In reply to comment #2)
> I think you are right.
> [F8] shows details and [F11] shows the calendar pane therefore [F9] should work
>  well.
> 

:)

In SeaMonkey, F9 toggles the sidebar. SeaMonkey Mail is not working for me ATM,
but I think that there it toggles the folders (left) pane without the need for
an extension.

Created an attachment (id=8099) [details]
4.3 prerelease 97

This version uses (hard coded) F9 for the toggle. I might put in a secret
setting for disabling the shortcut but I think a configuration UI to enable or
change the key is overkill. Keep it simple.

Note: the folder toggle is not global, but per-tab. This the same standard
behavior as the Thunderbird menu command View > Layout > Folder Pane.

Created an attachment (id=8100) [details]
4.2 pre 97

no idea why previous attachment appeared misnumbered. This is it anyway.

I used QuickFolders functions "move to" "copy to" and "go to" for some time now
and it worked really perfect! 
Thank you for this.

Nevertheless I'm missing one thing wich was very helpful for me in Nostalgy:
If I want to move an e-mail to a subfolder named "2015" e.g. but I don't know
the name exactly and therefore search its parent named "archive" there will be
shown  path and / or name (depending on choice in preferences) of the parent
only but not the names of subfolders. That is what I am missing very often -
even if then a long list of folders might be shown.

Is there a chance to put an option to preferences?

(In reply to comment #7)
> I used QuickFolders functions "move to" "copy to" and "go to" for some time now
> and it worked really perfect! 
> Thank you for this.
> 
> Nevertheless I'm missing one thing wich was very helpful for me in Nostalgy:
> If I want to move an e-mail to a subfolder named "2015" e.g. but I don't know
> the name exactly and therefore search its parent named "archive" there will be
> shown  path and / or name (depending on choice in preferences) of the parent
> only but not the names of subfolders. That is what I am missing very often -
> even if then a long list of folders might be shown.
> 
> Is there a chance to put an option to preferences?
> 

I think it could be done, it just might slow down operation. In any you please
case raise a fresh bug on it?

I would suggest instead of listing candidates + all possible subfolders in one
long flat list (is this what Nostalgy does?) it would be good to have a tree
node arrow ► and then potentially only show 1st or 2nd level children,
(similar to the behavior of the recent folders list). It would be slightly more
awkward from navigation POV as we would need arrow down and arrow right, but
you would probably learn the names of the important subfolders quickly if you
had to do it more often.

One problem with features that are "More powerful" for one set of tasks is that
they often are seen as "cluttery" for others. But let's discuss on the new bug.

(In reply to comment #8)
> (In reply to comment #7)
> > 
> > Nevertheless I'm missing one thing wich was very helpful for me in Nostalgy:
> > If I want to move an e-mail to a subfolder named "2015" e.g. but I don't know
> > the name exactly and therefore search its parent named "archive" there will be

- also one more thing, the name matching only matches the start of words in the
folder when you enter 2 letters, from 3 letters on it will match the string
"within", so if you have a folder called

letters2015

it will be shown as soon as you type "201". I am avoiding showing it when you
only type "20" as I want to keep the results as short + quick as possible.
Again, that sort of search behavior is open for discussion (and maybe make it
more flexible).