Send Mail as Google Group

Hello,

I am using Google’s “G Suite” to manage email for my domain. I have a group setup for ‘[email protected]’. Is there a way for me to send email as the ‘no-reply’ group using OAuth? I’d really like to avoid spending $60 a year for an email I will never check.

I have tried setting up credentials with the OAuth consent screen set to use the ‘no-reply’ address, but Postman returns an error of “Communication Error [334] – make sure the Envelope From email is the same account used to create the Client ID.”.