Rated 4 out of 5 stars
The reason I installed this extension is "Do Not Notify" option, but it doesn't work at all. I still get all messages in desktop notification box despite having added "Do Not Notify" to all filters.
EDIT: Found a workaround. Instead of "Do Not Notify" I now use "Mark As Read" + "Mark As Unread" (the one from Filtaquilla) combination.