Hi @VictorIvanidze, Yes, I tested using outlook and it works. However, the power automate does not recognize it. Here is the error that I get.
{
"status": 403,
"message": "You are not authorized to send mail on behalf of the specified sending account.\r\nclientRequestId: b1144d2d-8dff-4095-909b-df2ada814771\r\nserviceRequestId: 78c6ee45-c2c2-ce0a-1626-c6c3efe62d8e",
"error": {
"message": "You are not authorized to send mail on behalf of the specified sending account.",
"code": "ErrorSendAsDenied",
"originalMessage": "The user account which was used to submit this request does not have the right to send mail on behalf of the specified sending account., Cannot submit message."
},
"source": "office365-eus.azconn-eus-003.p.azurewebsites.net"
}