{ "$schema": "https://json-schema.org/draft/2020-12/schema", "$id": "https://raw.githubusercontent.com/api-evangelist/paubox/main/json-schema/paubox-single-send-response-schema.json", "title": "SingleSendResponse", "x-generated": "2026-10-12", "x-method": "derived", "x-generator": "derive-json-schema.py", "x-source": "openapi/paubox-dynamic-templates-api-openapi.yml#/components/schemas/SingleSendResponse", "type": "object", "properties": { "sourceTrackingId": { "type": "string", "description": "Identifier for tracking the message source." }, "customHeaders": { "type": "object", "additionalProperties": { "type": "string" } }, "data": { "type": "string" } } }