Also is there an alternative to Google Docs?

I'm using Posteo and have absolutely no problem with it. The base price is 1€/month and for my purposes I haven't needed to buy any extra stuff (like extra space or aliases). It also allows access via mail clients by IMAP and POP, which is something I've seen many popular gmail alternatives not providing, despite being IMO a pretty important feature.

You mentioned storage space is important for you. The default size is 2.0 GB, but you can acquire more by paying +0,25€/month for every extra gigabyte up to a maximum total of 20 GB.

It should be noted however that it is a German company and therefore has to comply with German laws.

The one thing I'm not really convinced by is their approach to spam. The web interface doesn't provide any way to define rules to filter out spam except for filter exceptions, but the service already filters out spam for you and it will never reach your inbox. I would normally think that's a bad idea, but I've never received any spam nor have I noticed any mail going missing (except for my lemmy.ml registration mail which I remember I had problems with but I don't remember if it was Posteo's fault and if yes if it was their spam filter in which case it could be allowed to reach your inbox by adding it as an exception).

Protonmail and Tutanota seem like your best bets, big providers like to sort others in the spam folder tho!

Been looking at mailbox.org

It's pretty easy to setup your own domain if you don't mind it being someone else's server. I first used one called ZoHo, you just need a domain and a txt record to validate control as I recall and they'll do the rest for free. That was a number of years ago though so it may have changed since.

Protonmail but i prefer Tutanota made in Germany 100 % Privacy :D

Proton is too slow with updates usw

Skiff

I wanted my own domain and a good integration with android but I didn't want to give my data to microsoft so I went with https://www.ovhcloud.com/en/emails/hosted-exchange/

Had no issues so far for the last 2-3 years.

It's cheaper than protonmail and you're not locked to a specific application since Exchange is well supported.

Tutanota's pretty cool.

Proton mail for serious stuff and cock.li mail for fun stuff.

For me it would be an alternative to Google drive and it's office web apps.