Yeah, so I do all my documents and spreadsheets and stuff on Sandstorm Oasis, which is their managed offering. I can do a bunch of other stuff on it, and it's easiest to figure out the extent of it by just trying the demo yourself (https://demo.sandstorm.io) and checking out the apps and stuff. But in my case, I mostly use it like I used Google Docs and Trello before, that I can easily control my data on, and migrate to a self-hosting solution easily later.

Sometimes it's hard to explain Sandstorm because they have a wide variety of good use cases for it, and there's really not a lot of comparable software packages to it. (It's like ownCloud but it's not like ownCloud, it's like Docker but it's not at all like Docker, etc.)

Recently I started a "paper evaluation" of paid, privacy protecting (to a good extent) email services. I found Fastmail to be quite expensive if one needs multiple accounts. Providers like Protonmail and Tutanota don't support IMAP or any other way to download mails (the web interface and apps are the only choices). That makes it very difficult (or impossible?) to move to another service and take one's older mails along. Protonmail does not support custom domains, whereas Tutanota does.

The cheapest solutions I like currently are posteo.de and mailbox.org. I have not started using either of them, but plan to move soon. Posteo does not support custom domains (it is heavily privacy focused and refrains from collecting or storing customer data as much as possible). So your only choice is to use one of many posteo.x domains for the email address. On the other hand, mailbox.org supports custom domains. Both support IMAP, web mail, migrating email from other providers, etc. Both these services and their websites are worth a look, IMO.

Yeah, ProtonMail was the other one I considered, but the price for storage wasn't nearly as compelling, and both had reasonably strong privacy stories. And now that I'm in FastMail, I'm really amazed at the flexibility and control it gives you, especially with connecting your own domain and stuff.

Back in the day, Gmail's driving appeal was it's pro features, and I'd argue that FastMail makes Gmail look basic. Also, I've opened two support tickets this week to ask questions and got responses within an hour or two.

I've been a FastMail customer since their beginning. I will not use anyone else as long as they exist. I have several accounts with them. Very much worth the money.

Rob, Bron, and the FastMail guys are the best in the world at what they do. I have zero affiliation with FastMail except for as a happy customer. And with these guys, you are the customer, not the product. The do email, calendaring, etc. better than any other company out there. I've been in IT for 3 decades and I can tell you that the level of quality and care the guys at FastMail deliver is so very, very rare. Money more than well spent.

Protonmail doesn't have pop/imap/external app use. I've heard it's coming in the following months.

It's great apart from that, but this is a fairly big negative if you want to use a bunch of email accounts. There are some other negatives as well, but apart from this, it seems ahead of the pack.