I’d think if you saved a draft in gmail it is probably accessible after deletion if google isn’t in on it. I’d also expect they have already been gathered if q is talking about it.
If I start a draft in gmail and save it, anyone can log on to my account and read/add to it - from anywhere - so they can have a round robin using gmail accounts all over the world - also all is save in the google cloud..
In the EULA (End User License Agreement) from Google you give them the right to view your mailbox, all of it sent or not sent as it is stored on their servers not locally on your system.
So no matter what you have done or are in the midst of doing it is all there is the “cloud” on their systems. And it is strictly up to them how long they hold onto it as an archive, same goes for your Google drive which share the initial 15GB space they give you when you open your account. And they are looking sor all kinds of information on your habits, when you log in to YouTube they ask for your credentials, more information to flesh out your profile
Facebook does the same thing, and if you do not know this yet any/all pictures you post their they own (read the EULA) and there is not yet in place that I have seen to require them to do a “full clean” erase of your history. This is proved by the announcement from Facebook that they just migrated 1.5 Billion records to storage in the US as they are trying to avoid GDPR regulations on personal information privacy and the “full clean” regulation is in the GDPR standards. My reading of all of this is that even if they migrated all the records any/all of the records generated by EU residents is still covered by the regulations no matter where it lives.
Put it all together and they are sharing information with each other and each of us has a profile with all of what we have been up to, what we searched for etc all conveniently captured in our browser that of course requires their servers to manage it all
Makes you all warm and fuzzy don’t it....