5 つ星中 3つの評価を受けています

I wanted to cull out some RSS element based on their website ('content-base' header), but unfortunately that extension does not offers this as a criteria for fiding dups.

これは以前のバージョン (0.3.16) についてのレビューです。 

Nobody's requested this before; file a feature request and we'll see.

... having said that, Thunderbird might not be exposing this to me anyway.