I am a fan of Standard Notes, but crypt.ee is also solid as far as I know.

Both Proton and Tuta are great choices. Of the two, I prefer Proton simply because Tuta’s UI makes my head implode.

But for my every day, general email usage, I have gone with Posteo.de. They are pretty cool and work seamlessly with any email client of your choice (no need for Bridge, or the like).

And money.

This is so true that it actually hurts to read.