Set up your email smtp credentials either by department or individual users.
Aturian users have the choice of using Orders, Purchase Orders, or Invoicing departments to segment what "From" and "Reply To" email addresses will be used when generating emails in the system.
Individual users can also opt to use their own email addresses for all emails that they transmit out of Aturian.
Department Level
Found under Administration > Integration> SMTP
User Level
Found under Profile in top right of any screen> Settings>SMTP Settings