EmailDeliverPayload

{
    "recipient": "ana.gomez@example.com",
    "fields": {
        "name": "Ana",
        "invoice_number": "F-2026-00184",
        "amount": "COP 145,000"
    },
    "programmedDate": "2026-09-01T14:30:00Z",
    "attachments": [
        {
            "attachmentName": "invoice-2026-04.pdf",
            "content": "JVBERi0xLjQKJcfsj6IKNSAwIG9iago8PC9MZW5ndGggNiAwIFI+PgpzdHJlYW0K",
            "attachmentId": "string"
        }
    ],
    "attachmentId": "string",
    "attachmentName": "string"
}