It wasn't too long ago that we hit a http://www.zimbra.com/forums/announc...milestone.html, but this blows even that out of the water: Digg - Zimbra Tops Google's Gmail with 40 million Paid Mailboxes

Thanks everyone for 'voting' us best-in-class when it comes to collaboration; no matter which edition your using, you've contributed to making Zimbra a success.