When a customer places an order via your online store, they will receive a copy of the invoice, and you can also receive a copy as a notification email.
This behavior can be configured by navigating to Dashboard > Settings > Commerce > Invoicing.
Under "Notifications", two options exist:Admin Notification E-mails:
Enter the e-mail address that should be notified upon sales. You can send a notification to multiple email addresses by separating them with a comma (eg. email@example.com, firstname.lastname@example.org).
'From Address' for E-mails Sent to Customers:
When customers are sent the invoice, this is the address that recipients see as the sender / reply address.