Kolab 2 or 1?

[Markus Mohr]

(this is a repost from the forum - I got no answer there)

Hi!

I'm currently evaluating Kolab for our company and I'm wondering if I should
start with Kolab 2 or stick with 1?

How far is it? Is it usable? I can live with missing features, but I need
some sort of stability in the basic functions (that is mainly the mailserver
here, because that is what is replaced).
Other functions would be nice, but I can wait for them.

In one sentence: do I have a fully functional IMAP-mailserver if I start now
with Kolab 2?

thanks for your help
Markus Mohr