@matt Yes, this can be used as a "palliative measure", because as soon as I move from Inbox the filter is lost and so I still have to use a search ...

Thanks a lot @matt ! > May I ask you if, in the first case, the emails have been added to the database by a restore or any other manual operation...

Because my English is certainly bad, before giving up with Zimbra 9, I try to better explain myself by posting a screenshot of the same folder on Zimb...