Provider-neutral standard.v1 inbound callback into Thrd

postWebhookinbound_provider_event

Payload

schema_version'1.0' required
recipientstring email required
smtp_envelope_senderstring email required

Response

Accepted for async ingest

ingest_idstring uuid required
status'accepted' required
idempotent_replayboolean required

Changes

Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.