It's a soft expire for 30 days.
-Existing accounts will still function at the level of the Open Source Edition, plus a few things like backup.
-At one point we discussed stopping convertd (attachment HTML conversion) and having HSM not archive new stuff (haven't checked this lately) but your old mail certainly doesn't become inaccessible.
-Network Edition features like
MobileSync and the
Outlook Connector will eventually no longer function after the 'grace period'. (There should be other threads out there over the specifics of what is/isn't able to run.)
-You will not be able to create additional accounts as you're over your license.
At the end of 30 days if you choose not to commit (though we certainly hope you do!) kick off a
zmbackup (I like to take an additional backup of /opt/zimbra and any linked directories) then run the installer for the
same version of FOSS over your NE.