The flow is getting this error, nothing has changed on my end: You are not authorized to send mail on behalf of the specified sending account.
clientRequestId: 0699cb39-54b3-496d-9d54-a983300fc258
serviceRequestId: 7f76a42b-20d5-22f7-206b-db40e253f725
The error seems to be very clear, you don't have permissions to send email on behalf of account you have mentioned in mail actions. Could you check whether you have permissions to do same ?
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