---
title: "Send an invoice"
method: POST
path: "/v3/invoices/{invoiceId}/email"
tags: ["invoices"]
---

# Send an invoice

`POST /v3/invoices/{invoiceId}/email`

Send an invoice to a customer email address. You can send the invoice to multiple email addresses.

See [Invoices](https://developer.bill.com/docs/ar-invoices) in the Guides section for more information, sample requests, and responses.

## Path parameters

- `invoiceId` string, required — BILL-generated ID of the invoice. The value begins with `00e`.

## Headers

- `sessionId` string, nullable — API session ID generated with `/v3/login`
- `devKey` string, nullable — Developer key generated with your BILL developer account

## Request body

- SendInvoiceRequestDto — Send an invoice to a customer
  - `replyTo` object, required — Invoice sender information
    - `userId` string, required — BILL-generated ID of the user sending the invoice. The value begins with `006`. You can retrieve your user ID when you sign in with `/v3/login`.
  - `recipient` object, required — Invoice recipient information
    - `to` string[], required — Recipient email addresses

## Response `200`

Send an invoice response

## Other responses

- `4XX` — List of errors.
- `5XX` — List of errors.

---

[API](https://skmtc.net/bill/apis/bill-v3-api.md) · [All operations](https://skmtc.net/bill/apis/bill-v3-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/bill/bill-v3-api/revisions/0483350c434e/schema)