Axel Grude QuickFilters Pro 6.5.3 | 4.4 Mb
This extension makes it much easier to create new mail filters, by simply dragging emails into folders and let quickFilters do the "heavy lifting" of filling in the sometimes complicated settings in the filter settings. Filters are usually used to move emails to other folders, automatically, so it makes sense to show Thunderbird "what to do" by dragging one typical email manually, rather than filling in all the complicated details.
Home Page - https://quickfilters.quickfolders.org/