

find all filters that affect a specific folder.find duplicate filters or filter conditions.extended search of filters: search conditions / actions / folder name.alphabetical sorting & grouping of selected filters.cut, copy and paste even across mailboxes.An advanced search box and 2 buttons (move to top, move to bottom) make it easy to manage many message filters. It also adds lots of good usability features to the filter list, as described in Thunderbird. It will prefill the destination folder and some of the conditions according to the selected template. You will be prompted to choose from 6 templates in order to create a new filter - the extension does the rest.

Activate the filter assistant, then drag an email into the folder tree. QuickFilters makes it very easy to create new filters.
