According to this question: Message delivery fail on Web Messenger
I learned that the exclamation point is just a temporary passing status. Eventually, it will be passed to the customer.
But I actually tested, (after two hours, the WebSocket Endpoint Going away)
using the same token, reopening and connecting WebSocket configure session, and did not receive the outbound exclamation point message.
(the config session response is : :{"type":"response","class":"SessionResponse","code":200,"body":{"connected":true,"newSession":false,"readOnly":false}} , show is reconnected to an earlier session)
Where is the error?
Or is there a webhook that will let me know that the send failed so I can try again?
The API that can actively obtain and send can also be provided?
Thanks.