Not enough people seem to know of
Close, but not exactly the same.
Thunderbird is the most lightweight email client that I can see.
I moved from TB to mutt/neomutt a couple of years ago and never looked back. It took a little while to set up, but the migration was definitely worth it. TB is extremely bloated in comparison.
I would rather see patients come into the hospital because of a false positive rather than sit around with nothing and "hope" nothing's wrong.
If they can't quantify the false positive rate, then it's potentially useless. It's like saying having blood is an indicator of stroke risk. 100% of strokes are caused by having blood. However, if you don't report the false positive rate, it's meaningless. Just because you have blood (or an abnormal heart rhythm) doesn't mean you have an increased chance of strokes.
The opulence of the front office door varies inversely with the fundamental solvency of the firm.