How do I know if an invoice is undeliverable?

[SebastianC]

Problem: Even when sending an invoice to a bogus email that does not exist, it has a status of OK in the Email History, and there were no notifications that it was not deliverable.

[SebastianC · Accepted solution]

Solution: Zuora does not currently collect or display the ultimate sending results, but If you have your own SMTP-Server, you can gather the results in there.