Yeah I’m at that point now too. Only issue is storage. I want to move my entire Gmail inbox but it’s too big for the free plan. Might have to cough up some dough if I can’t find a better alternative.

My biggest blocker by far in moving away, is calendars.

My family has so many interconnected calendars (I personally have 12 on my phone right now) and I still haven't seen that anything else can do what Google does with calendars. My entire family (minus ex wife) is using Gmail on our own domain, and the ex still has r/w access to our kids' calendars (for noting play dates, doctor's appts, etc).

Even syncing Google with Outlook is pure hell - in both directions - and that's before you start adding the interference from employers' firewalls and shit.