[samdunham]

A near 100% drop-in replacement for Exchange server is kind of the holy grail of messaging/collaboration. I was looking at something that claimed to be that (or close) many, many years ago when I was doing consulting, so I could try to save my clients some money. But nothing had all of the features they wanted or was as seamless as they wanted it to be. I don't remember what the software was called, but it pre-dated Zimbra (which I think I've installed once to dink around with). I think this is more difficult now, with the move to cloud services like O365 and Google Suite. But having a self-hosted, Outlook compatible, Exchange substitute would be great.

[tracker1]

That has been my experience as well... these days Office365 is often the best option, with Google Docs/Gmail, Fastmail and a handful of others coming close. I'd generally favor o365 currently, but would love to see Moz deliver a great alternative. They definitely have most of the expertise to do so (even if UI/UX could use some improvements).

[floren]

> I was looking at something that claimed to be that (or close) many, many years ago when I was doing consulting, so I could try to save my clients some money. But nothing had all of the features they wanted or was as seamless as they wanted it to be. I don't remember what the software was called, but it pre-dated Zimbra

Ximian's Evolution?

[conception]

Ran Zimbra for a number of years and it was fine as an exchange replacement. Only reason we moved is we wanted SaaS and didn't want to maintain it anymore.