Review for Signal Spam by dqgW4RETN
Rated 4 out of 5 stars
It is good, but warning this DOESN'T block spam the way you think. It works as an alarm system in which different people can report emails as spam. So you and others have to do your part.
This review is for a previous version of the add-on (4.1.0).To create your own collections, you must have a Mozilla Add-ons account.