Hey Arcane -
Thanks for the reply, I actually did figure that part out
what I did notice about that path you listed :
/opt/zimbra/store/0/<mailbox ID>/msg/
.. is that beneath that there are 256 subfolders beneath the ../msg directory - and not all of them contain data. Is there a document that would explain how those folders get populated and/or which methodology governs that?
ultimately we are looking to extract the mailbox over into an mbox format