It's hit or miss... As bad as Outlook has gotten since the backend shift to O365, it's still got better contact and calendar/meeting integrations than anything

It's hit or miss... As bad as Outlook has gotten since the backend shift to O365, it's still got better contact and calendar/meeting integrations than anything else I'm aware of. I mean, Google's calendar is "good enough" for most things, but shifting a single instance of a meeting, or more interesting repeat cycles is a pain by comparison. Let alone 3rd party integrations. If I ever came across F-U money, I'd build an open-source outlook+exchange replacement. Probably 3 versions, one for a single domain for easier deployment, one for mid-large companies with multiple backends, and something with more cloud integration/distribution. I think if cloudflare had workers for TCP services, doing an email service on cloudflare could be awesome.