Currently you can only send emails from one sending domain per sub-account. It would be great if we could set up a way to have different sending domains for different workflows.
For example, internal email notifications in one workflow sent from Domain A and customer facing follow-ups in another workflow sent from Domain B.
Currently, this isn't possible, even if Domain B is added to the account as a sending domain. Emails will only be sent from the default domain (Domain A, in this case).