^^^ Not to mention that Gmail’s search function is as good - or most likely, much better - than any other email provider’s search function, whether they’re free or not.
Fine whatever.
At least I didn’t answer “it’s free” or any of the other useless things in the thread. If you have a better answer than mine, by all means, provide it.
My understanding is that Gmail search makes use of Map/Reduce. If I’m wrong, than I’m wrong.
Perhaps in your haste to find my wee joke “smug,” you missed the fact that I followed it up with an actual answer that addresses the factual question.