As I understand, mail tags in zimbra are not shared by users, so trying to tag a message in a mounted shared folder it is not possible unless the same tag (name and index) exists in both accounts.

I'm trying to find a way to synchronize tags between some of the accounts.
I can see the tag number for each message in the zimbra database but I could not find where the tags are mapped (tag number to tag name).

I would appreciate if somebody could post where in the database or in which file the mapping is done.