Rated 4 out of 5 stars

per Stilor el gen. 11, 2019 ·

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???

This review is for a previous version of the add-on (3.8.1). 

per Realraven (Axel Grude) (desenvolupador) a gen. 11, 2019 ·

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