Rated 5 out of 5 stars

This works very well and is very useful.
I have 2 feature requests:
1 - could it be possible to apply the filter to the subfolders? I have an archive dating back to 1998; per year/per month. It would be great to apply a filter to all of these folders.
2 - is there a possibility to have a button instead of the option in tools? That would make it so much easier.
But thanks for the nice work anyway.

This review is for a previous version of the add-on (1.3). 

Hey topsoftbe,
Thanks for the review...
As for the requests...
#1 I would have to look into it, as it's been quite some time since I have developed this extension.
#2 - I'm not sure if I understand... this extension IS the button... all you have to do is to right click on the mail toolbar and customize it. The Folder Filters Button will be there. You cab then just drag it to the toolbar.