I think the point is that this is testing your MTA, not his. I.e., if you're connecting directly to unverified.email, you're not really testing whatever your ap

I think the point is that this is testing your MTA, not his. I.e., if you're connecting directly to unverified.email, you're not really testing whatever your app uses for outbound. Afaict, this isn't a forwarder, just a mailbox endpoint.