Earlier quoted context omitted.
My very first boss that I believe is an undiagnosed psychopath is now director level over there. That told me everything I needed to know about any possible direction of the company. I no longer use anything made by them and actively steer everyone I know away to alternatives.
What alternatives do you recommend for email? That's my one google service I have difficulty getting away from.
A SBC like a Raspberry Pi is sufficient to host mail services for a fairly large number of people. Filter out spam with Spamassassin and a greylist, run sieve to organise your incoming mail flow, use specific mail addresses when communicating with commercial and government organisations and you'll end up asking yourself why so many people insist that self-hosting mail is not an option.
Now that you're self-hosting mail you can also self-host XMPP using the same address making it possible for people to reach you through either SMTP (mail) or XMPP (instant messaging/voice/video calling) using that address. This can be hosted on that same SBC without problems.
Source: my own experience self-hosting mail (and more) since the 90's. If it worked on a 486DX2-66 it should work on a quad-core 1.5GHz 64-bit ARM...