The caller should be able to determine if a message was sent via SMTP or if it was queued. This can be helpful if the recipient is on the phone and expects the message to arrive immediately. A queued message might be delayed (until the periodic queue runner picks it up).
Also it might make a misconfiguration (e.g. bad credentials) immediately obvious.
The caller should be able to determine if a message was sent via SMTP or if it was queued. This can be helpful if the recipient is on the phone and expects the message to arrive immediately. A queued message might be delayed (until the periodic queue runner picks it up).
Also it might make a misconfiguration (e.g. bad credentials) immediately obvious.