oleh Realraven (Axel Grude) (Pengembang) pada Nov. 14, 2012 · tautan permanen

Thanks -there is an addon called Color Folders which does colors the mail folders in Firefox, is that what you mean? You might want to contact its author he might be interested in creating one for Firefox as well...

oleh Realraven (Axel Grude) (Pengembang) pada Mei 25, 2012 · tautan permanen

I am always open to useful suggestions (but I think your caps lock key is stuck, which might be considered 'shouting' by many). You can contact me directly on the QuickFolders options screen on the Support page, click the bottom button to send me an email!
TIA, Axel

oleh Realraven (Axel Grude) (Pengembang) pada Mei 18, 2012 · tautan permanen

also install the new companion extension, quickFilters, for even more added email sorting powers!

oleh Realraven (Axel Grude) (Pengembang) pada April 17, 2012 · tautan permanen

...and if you like to participate in the official feature request: https://www.mozdev.org/bugs/show_bug.cgi?id=24715 {New feature - button to toggle quickfolders toolbar}
or you can raise a new bug from here: http://quickfolders.mozdev.org/bugs.html

oleh Realraven (Axel Grude) (Pengembang) pada Jan. 9, 2012 · tautan permanen

.. and questions like this, you can also contact me directly from the extension (options screen, last tab). To be honest, I would think this is indeed Thunderbird's behavior, but I bet it can be configured in some way (advanced settings).