Interesting. Can this be managed from an admin panel or would you have to log in to each mailbox individually to manage settings?

For comparison, here's the MS documentation: https://docs.microsoft.com/en-us/microsoft-365/admin/email/c...

I'm a big proponent of open standards, so if anybody on HN knows e-mail providers that can sanely do this and store your data within the EU (Fastmail says they don't [1]), I'm definitely interested to hear about them. We would also have to find decent alternatives for other parts of MS365, though (file sharing and single sign-on (currently our users have different logins for various systems, causing them to write their passwords on sticky notes...)).

[1] https://www.fastmail.help/hc/en-us/articles/1500000280221#ph...