I did a search for posts on Google Takeout before posting this and the only one I saw was from a year ago so I guess its ok to post this.
I just learned about it this morning.
The TLDR; is that you can request all the info Google has on you, in my case I want to do something with that data as I move away from Google, but just seeing what they have is nuts.
You might want to consider doing so.
(i would link the url, but its long and ugly, just search for Google Takeout, you will find it)
i actually recently tried this, and for some reason almost all the files were empty, didnt even contain my mails