Yes, you are right. The forwarding option from private mailbox is not yet available in Italian language. The good news is we have already taken this up as a feature request and we’ll post the updates here in the thread once the feature is live.
As of now, you can change the language of your mailbox (and the agent’s mailbox) to one of the supported languages for this to work. Also, navigate to Admin → Email → Advanced settings and confirm once if the following option is enabled:
Once you do this, when a customer writes to any of your agents, they can simply forward the mail the your support email address and the ticket would be created on behalf of the customer.
Irrespective of the language, if mails are forwarded from a non-agent mailbox to your support address, they would be created as tickets with agent’s email as the requester.
If you have further queries on the same, please post them here and we’d be glad to help. Thanks!