Receiving
EmailByScott can receive email, not just send it — useful for handling replies and routing incoming mail.
Inbound emails
Received messages show up as inbound emails you can view and, if something went wrong processing one, reprocess.
Routing rules
Routing rules decide what happens to an incoming message — which mailbox it goes to or how it's handled — based on conditions you set. You can configure rules and test them against a sample so you know they behave before relying on them.
Mailboxes
Mailboxes are the destinations inbound mail can be forwarded to. You manage them and can send a test forward to confirm delivery works.
Together these let EmailByScott act as the receiving end of your apps' email, not only the sender.