This is not possible. The Send an email connector is limited to those users with whom you have authenticated manually via the Data > Connections section of your Power Automate profile.
If this is functionality you would like to see added to Flow, a Flow Connector, or a Flow Template, please consider submitting it to the Flow Ideas page, where it can be voted on by other users, and tracked and commented on by the Flow team.
You can however send an email on behalf, but you need permissions to do so.
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