Assegnate 4 su 5 stelle

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???

Questa recensione riguarda una versione precedente (3.8.1) del componente aggiuntivo. 

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