Rated 4 out of 5 stars

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???

Dié resensie is oor 'n vorige weergawe van dié byvoeging (3.8.1). 

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