Hi @Renato Pereira
At present, when you share files with other teams, Teams will only send emails to team members, and there is no function to send reminders through Channel yet.
For PowerAutomate, currently the SharePoint connector in Power Automate does not support a trigger for when a file or folder is shared with another user and so it is not directly doable.
To get this feature more quickly, you can send a feedback directly to Microsoft Feedback to add it in future updates.
Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future.
Thanks for your understanding and support.
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