Am I the only one who thinks it's incredibly weird to introduce a new terminal based mail client without mentioning anything at all about how it differs from any of the already existing and popular terminal based mail clients?

But that's not the point, the point is that more than 3 out of 4 people able to read this post don't live in the US.

[…], only that you can easily see how the mistake gets made without ever calling it chauvinism.

This is the point where I strongly disagree with you, constantly mistaking less than ¼ for being the most likely is not easily made, there's a good reason for why the expression US Defaultism exists, because a particular mindset is required for such a mistake to be easily made.

Around 1½ billion people in the world know English, less than ¼ of them live in the US.

For learning language learning, I believe that this book currently is the best fact based resource available:

https://fluent-forever.com/book/

14 for $0.88

I see what you did there!

A posting made by an organic life form, typically a human.

This book is currently boosting my morale:

https://www.penguin.co.uk/books/453652/not-the-end-of-the-world-by-ritchie-hannah/9781529931242

https://www.ch.ch/en/foreign-nationals-in-switzerland/entry-and-stay-in-switzerland/visas-for-foreign-nationals/

Progress!

Paying taxes to the US forever!