curl -X POST \
 /customers/{customerId}/email-addresses \
 --header "Content-Type: application/json" \
 --header "Authorization: Bearer <token>" \
 --data '{
    "email": "john.doe@example.com",
    "receiverName": "John Doe"
}'

import requests

url = "https://coreapi.io/customers/{customerId}/email-addresses"

payload = {
    "email": "john.doe@example.com",
    "receiverName": "John Doe",
    "isInvoiceEmail": False,
    "isDunningEmail": False,
    "isDefault": False
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    email: 'john.doe@example.com',
    receiverName: 'John Doe',
    isInvoiceEmail: false,
    isDunningEmail: false,
    isDefault: false
  })
};

fetch('https://coreapi.io/customers/{customerId}/email-addresses', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://coreapi.io/customers/{customerId}/email-addresses",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'email' => 'john.doe@example.com',
    'receiverName' => 'John Doe',
    'isInvoiceEmail' => false,
    'isDunningEmail' => false,
    'isDefault' => false
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "email": "john.doe@example.com",
  "receiverName": "John Doe",
  "id": "00000000-0000-0000-0000-000000000000",
  "isInvoiceEmail": true,
  "isDunningEmail": false,
  "default": "true"
}