I created a flow in QuickSuite that fetches email IDs and sends messages to them through Outlook. I’ve integrated Outlook with QuickSuite and signed in using my Outlook account.
However, when the flow tries to send the email, it doesn’t use my Outlook address as the “From” email and throws an error.
To my understanding, service authentications are required to handle permissions for Quick Sight to access those external resources so I would suggest testing out the service authentication option.