message_not_sendable

This kind of message is sent from your own email · HTTP 422

What causes this

Your customer gave their address for messages about their connection, such as a reconnect link or finishing setup. A check-in after they have stopped is not one of those.

How to fix it

Copy the message into your own email; replies come straight to you.

What the response looks like

{
  "error": {
    "code": "message_not_sendable",
    "status": 422,
    "message": "…",
    "hint": "…",
    "request_id": "req_…",
    "docs_url": "https://cloud.ngentix.ai/docs/errors/message_not_sendable"
  }
}

Quote the request_id if you contact support — it identifies your exact request in our logs.