Hi @Federico Coppola ,
Welcome to our forum!
As far as Outlook clients are concerned, CSV files can only be manually imported into a single Outlook.
For the Power Automate you mentioned, please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client. In order to better solve your problem, it's suggested to post your issue on this dedicated forum for Microsoft Power Automate for more professional help.
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