I admit (again) that I didn't much like Zimbra for its first year of existence. I thought it was all hype. But even the crustiest of observers (like me) is starting to be persuaded that there's a whole lot of substance going on over at Zimbra (now if they'd only indulge me and go GPL ;-). Here's what I just heard:In the first quarter of this year, it has added another two million paid mailboxes and now boasts mo I admit (again) that I didn’t much like Zimbra for its first year of existence. I thought it was all hype. But even the crustiest of observers (like me) is starting to be persuaded that there’s a whole lot of substance going on over at Zimbra (now if they’d only indulge me and go GPL ;-). Here’s what I just heard:In the first quarter of this year, it has added another two million paid mailboxes and now boasts more than eight million paid mailboxes worldwide – a figure that doesn’t include any mailboxes associated with its recently announced partnership with Comcast! Zimbra continues to loosen Microsoft’s stranglehold on enterprise collaboration in the US, and it now supports users in 45 countries worldwide. On-premise customer growth was up 70% for the quarter, and Zimbra’s reputation for innovation has also landed it 80 new partners in more than a dozen vertical markets.I’m sold. Actually, so much so that I’ve started pushing my own company to use Zimbra internally (just as Redmonk and others in the community do). We’ve had a good experience with SugarCRM, so hopefully this will be one more great project to build on. Open Source