I wrote this article. ISTM that you did not understand it well. The first line you quote refers to Firefox. The second line you quote refers to Thunderbird.

I wrote this article. ISTM that you did not understand it well. The first line you quote refers to Firefox. The second line you quote refers to Thunderbird. I am at a bit of a loss how you can conflate these 2 separate comments about 2 separate products with different functionality.