# Invoice email sent API Reference

Delivered when an invoice has been successfully sent to its recipients via email.

**Trigger:** Outbound email provider confirms the message was queued/delivered.

**Recommended actions:**
- Mark the invoice as "sent" in your records.
- Persist `all_recipients` and `sent_at` for audit / customer service.

**Always verify `BeeL-Signature` before processing.**


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Full OpenAPI spec: https://docs.beel.es/api/openapi