Overview
The InvoiceSent event confirms that an invoice has been successfully delivered to the customer via email or other means.
Event Schema
{ "eventId": "uuid", "eventType": "InvoiceSent", "timestamp": "2025-12-11T10:30:00Z", "version": "1.0.0", "data": { "invoiceId": "string", "invoiceNumber": "string", "customerId": "string", "sentTo": "string (email)", "deliveryMethod": "email | portal | mail", "sentAt": "timestamp" }}