email_permanent

The send failed for a reason that will not change on a retry.

• The recipient address was rejected.
• The sending domain is blocked, or the API key is wrong.

• Correct the address or the sender configuration.
• Queued sends that hit this go straight to the dead-letter table with the reason attached, rather than burning retries.

{
  "error": {
    "code": "email_permanent",
    "message": "The send failed for a reason that will not change on a retry",
    "request_id": "7cb7f7862a82425d8e4c3fb8a497dfe6"
  },
  "type": "https://integrable.cloud/docs/errors/email_permanent",
  "title": "Email Permanent",
  "status": 502,
  "detail": "The send failed for a reason that will not change on a retry",
  "instance": "/api/bots/01a0652b-3713-7ea1-a6c9-2e895389ec34"
}

Branch on error.code, not on the message — the code is stable, the sentence is not. Log request_id either way.

Codes that are easy to confuse with this one, or that show up alongside it:

• email_transient
• email_not_configured

Quote the request_id from the response — hello@integrable.cloud. It is what lets us find the exact request. The full list of codes is at Error codes, and the conventions every endpoint shares are in Retries, versioning and limits.