Send Message in Thread
Enqueues an outbound message in this thread. For SMS/voice/email: dispatched async via DispatchOutboundMessageJob (DLC + OptIn + STOP footer + proxy-number-resolution gates). For IN_APP_CHAT: short-circuits QUEUED→SENT immediately and fires MessageSent, which fans out push notifications to every non-sender office/tech participant. Chat messages may carry attachments either via Variant A (multipart files[]) or Variant B (JSON attachment_uuids[] - separate Postman request below). Returns 202.
Headers
{{tenant_key_name}}
Request
This endpoint expects a multipart form.
body
Required: Message body - max 1600 chars (SMS segment limit)
Response
Successful response
