Sending Certificate to User's Email Address

Last updated: December 16, 2025

Send Certificate via Place Order API

Endpoint:POST /rest/V1/carts/mine/payment-information

Description: Allows the submission of payment information and includes functionality to send a certificate as part of the order placement process.

Request Body Example:

{
  "paymentMethod": {
    "method": "purchaseorder",
    "extension_attributes": {
        "agreement_ids": ["1"]
    }
  },
  "billing_address": {
    "email": "user@example.com",
    "region": "Region Name",
    "region_id": 518,
    "region_code": "XX",
    "country_id": "NL",
    "street": [
      "123 Example St"
    ],
    "postcode": "123456",
    "city": "Example City",
    "telephone": "1234567890",
    "firstname": "FirstName",
    "lastname": "LastName",
    "extension_attributes": {
        "custom_email": "custom_email@example.com"
    }
  }
}

Key Notes:

  1. Extension Attributes:
    • custom_email: Add a customer email attribute under billing_address for sending the certificate.