But when your account is suspended that doesn't really help you eh
But if you actually care that much, why not just pay for Google Workspace? The cheapest tier is $6 a month and gets you access to more or less what you want. (n.b.: I'm not making any representations about the quality of the support that you'd receive, only that it's available. I don't work at Google.)
I haven't needed to contact support, but I think they have a manned tech support email address too.
Also, unfortunately Gmail/Gsuite is very cost-effective for us. We've looked at ProtonMail which seemed nice and potentially worth supporting but they would have cost us probably ten times or more what Gsuite costs (for email service only!) thanks to having to buy a ton of add-ons to get feature parity (they actually do charge extra for pretty much each custom domain and alias you want to use). And buying 100 GB of storage costs an eye-watering $120/month ($1.99 on Gsuite). I really don't know why their pricing is so weird. I know they can't probably scale as well on storage but adding aliases does not cause any measurable additional cost for them...
Anyway, if anyone decides to make a Gmail UI clone with a reasonable spam filter and pricing that's at most 2x what Google charges: Please let me know, I will migrate 120 new users to you within a couple weeks (not much on a grand scale but it's what I can offer...) :-)
For storage, I’ve successfully reached human tech support at synology and backblaze.
The UI is much better than the gmail one, and the mobile apps are excellent. It supports tags or folders, depending on user preference (I prefer folders, so this is a huge advantage vs gmail.)
The spam filter is much better than gmail’s, at least for my account. Over the same corpus (my email went to both during a transition period), they both let zero spam through, but gmail was incorrectly blocking 10-30% of incoming email until I disabled its spam filter.
Also, their support is... not exactly useful. I had to use it once a couple years ago (a feature wasn't working, I forgot which one) and all they could offer where excuses and "we take XY very seriously" and "thanks for bringing this to our attention". They never fixed it, of course.
Google has excellent engineers who crank out amazing stuff with a passion. Google is however shockingly bad in converting these things into something of lasting value, supporting and improving the excellent seeds they have/had (just look at the famous Google graveyard). As money is no object for Google, you can only come to the conclusion that all this is done on purpose and even purposely sinister. They focus on their ad business as that has a ROI that blows literally any other product in existence out of the water. And they just don't bother with anything else anymore. I mean, why would you spend your days toiling, building and maintaining stuff earning a decent (but not an obscene) wage if you had an ATM, nay a dozen, that just shoot free money at you all day like crazy. I can understand it, but it's still sad, from a societal perspective ("make the world a better place" etc. etc.).
Lastly, you might also find that you will not be able to access the support options anymore if you have real problems or once your account has been locked for whatever reason. There are several services like this out there and I have seen it happen once at an old company: Provider locked a whole group of users out of the platform because of "suspicious login activity" on the admin account (admin was overseas). To access the support page you had to login first. Which you couldn't. Because it was locked. Took three weeks and snail mail (!) to get access to the platform back. Cancelled right after.
I would be extremely surprised if paying $6/month meant that your experience was different. Not that it shouldn't be, mind you, of course it should. I'm just saying it likely won't, so don't bet on it...
For example, someone got banned from Ads for paying with Apple Credit Card https://news.ycombinator.com/item?id=20841586
I'm obviously not a fan of paying for protection, but peace of mind for your online identity is worth $X/month. Not to mention search, email, maps, etc. has way more than $0/mo. utility.
Plus you get an absolutely fantastic desktop app on Windows & Mac.
And for that you also get full Microsoft Office desktop apps included too.
Just get a domain like `Smith.com` and then use the email `John@Smith.com`. Then it doesn't matter if you're using Gmail, Fastmail, Protonmail, etc. You can switch to a different company whenever you want (to get the best rate, avoid abusive terms, bad service, etc) without having to update your business cards, websites, online accounts, etc.
You'll still need to have a way to back up your old messages though.
I used gmail with a custom domain for years before I finally decided to move to fastmail, which made the move pretty painless. That said, when I set it up gsuite with a custom domain was free. I don't think thats the case any more.