5 つ星中 4つの評価を受けています

Somewhat convenient. But why doesn't the "Mailing List" option create a filter based on a List-Id header, which is standard for mailing lists???

これは以前のバージョン (3.8.1) についてのレビューです。 

good point - however - please go to my support site for bugs & feature requests:
http://quickfilters.mozdev.org/bugs.html