I was looking at Zimbra pricing, and it looks like you can ONLY pay for 25-member blocks.

So if you have 26 people at your place, you have to purchase 50 accounts, correct?

What if we only have 20-23 people, but some new people get hired - or even some leave (and their accounts get deactivated, but not deleted) while some new people come in.
What I'm wondering, if we pay for 25 mailboxes, what happens if the number of accounts hit 26 for any reason? Will it not let us create the 26th account? Will it warn us? Will it alert Zimbra that we have gone over the limit?
Or will it just let us make as many mailboxes as we want, with us simply on the "honor system"??