Core application·Test·EnabledNO NETWORK REQUESTS

Endpoint configuration

A receiving application would use a backend-issued signing secret to verify authenticity. No real signature is generated here.

Test event

A local simulation creates a delivery-attempt record. It does not call the configured URL.

Event ID	Endpoint	Event type	Attempt	Time	Response	Result	Next retry
`evt_demo_welcome`	Application events	Message delivered	1	Oct 30, 2026, 7:12 AM	200 OK (fictional)	Successful	None
`evt_demo_bounce`	Application events	Message bounced	1	Oct 29, 2026, 12:20 PM	503 unavailable (fictional)	Failed	Illustrative retry available

{
  "id": "evt_demo_example",
  "type": "message.accepted",
  "message_id": "msg_demo_welcome",
  "preview": true
}

Payload fields and event semantics are examples, not a finalized production webhook contract.

MAILFLOW WORKSPACE

Preparing the frontend preview.