I would love to do this. However the warnings signs have blared into a real crisis: Google Docs has a stranglehold on “work”, in the broadest sense of the term, the way Microsoft Office once did. Until documents are decoupled from corporate lock-in on a mass scale, I’m personally stuck & likely many others are.
No it doesn't! When you use GMail, you understand that Google have some potential sight of your emails and you accept that because that's how it works.
What you DIDN'T sign up for is Chrome, which can see every site you have every visited, sending all of that info to Google as well to perhaps start targetting some different ads at you. I'm sure that would work well if one of your housemates had visited a dodgy site, which then picks up some suspect ads when you are doing online shopping with your girlfriend.
Maybe switch to Firefox and use their accounts toggle feature. It lets you separate out sessions for particular sites. It’s not “chromium” but it works well for what you are asking for as far as I can tell.
>Would you mind to explain how using gmail is fine but having to log in into chrome is not?
Well, I've sort of just accepted that Google has all of my personal data at this point. I trust them with data that I want to explicitly give up for the sake of convenience. Anything I type into Gmail I can accept as becoming essentially public record.
However, that doesn't extend to passively collected browsing data. It creeps the shit out of me that my private browsing history could be associated to my real life identity and other PII by someone at Google.
I use both ProtonMail and FastMail for different purposes, and am considering switching my FastMail account to the main one. It may not be as well integrated, but that's kindof a boon. GMail's new user interface is _really_ clunky. (I know I can switch to classic mode, but I'd rather just switch to something else entirely.)
I used to self-host because I could run really strict spam filtering. Unfortunately Sonic dropped their plans to offer static IPs and reverse DNS with their fiber products so I'm stuck with using their servers as a smarthost at least. Can't say I enjoy it (especially with their all-day outage this week), but it does give me a chance to at least easily run aggressive spamassasin filters.
I have a self-hosted domain too, with docker-mailserver, but only for less important email. For important communications I really worry about ending up on a spam list somewhere and landing directly in people's spam box, plus there are potential downtime concerns, so I stick to GSuite for that.
I've had a couple occasions where things have disappeared into the void. This was, of course, after moving away from a static IP (thanks Sonic). On the inbound side, I've had repeated delivery problems with Sonic blackholing mail from some financial institutions.