Rated 4 out of 5 stars

Great extension. I would love to see it built-in.

I think it just lacks "Classification -> Clear" option to allow clearing of the false results, and then bulk move the rest.

I guess explicitly stating certain messages are not of any of the available categories could improve the filter, also (just like with the junk filter).

This review is for a previous version of the add-on (1.0).